Montana: 2002 · Montana: 2002 2002 Economic Census Vehicle Inventory and Use Survey Geographic Area Series Issued September 2004 EC02TV-MT U.S. Department of Commerce

Montana: 2002

2002 Economic Census

Vehicle Inventory and Use Survey

Geographic Area Series

Issued September 2004

EC02TV-MT

U.S. Department of CommerceEconomics and Statistics Administration

U.S. CENSUS BUREAU

Many persons participated in the various activities of the 2002 Economic Census, Vehicle Inventory andUse Survey.

This report was prepared in the Service Sector Statistics Division under the direction of Thomas E.Zabelsky, Assistant Division Chief for Current Service and Transportation Programs. Planning,implementation, and compiling of this report were directed by John P. Miller, Chief, TransportationCharacteristics Branch, assisted by Joy P. Pierson, Donald F. Cheza, William J. Marshall, ErikaMcDonald, Vernetta N. Southerland, Kathleen R. Walsh and William C. Jones.

Sample design and statistical methodology were provided under the direction of Ruth E. Detlefsen,Assistant Division Chief for Research and Methodology. Sample design and estimation methods weredeveloped under the supervision of Jock Black, Chief, Program Research and Development Branch,assisted by William C. Davie Jr., M. Cristina Cruz, and Brett Moore. The imputation procedureswere developed under the supervision of Carol S. King, Chief, Statistical Methods Branch, assisted byJames N. Burton and Tameka Johnson.

Systems and procedures for mailout, quality control, and check-in operations were developed in theEconomic Planning and Coordination Division, Bernard J. Fitzpatrick, Assistant Division Chief forCollection Activities. Mailout and check-in procedures were developed under the supervision of SheilaProudfoot, Chief, Mailout and Data Capture Branch, assisted by Christopher Berbert, Betty McKay,and Bernadette Gray.

Systems and procedures for data entry and quality control were developed and implemented in theDecennial Systems and Contracts Management Office under the direction of Dennis Stoudt, AssistantDivision Chief for Processing Systems. The Data Conversion Systems Branch, Warren McKay, Chief, wasresponsible for the development and implementation of the automated tracking and image managementsystem. The Processing Coordination and Requirements Branch, Derrell Matthews, Chief, coordinatedthe technical requirements for the image system.

The processing system and computer programs were developed and implemented in the EconomicStatistical Methods and Programming Division, under the direction of Barry F. Sessamen, AssistantDivision Chief for Post Collection. Computer programming and implementation were provided bySteven G. McCraith, Chief, Census Related Surveys Branch, assisted by Barbara Love Lambert,Evelyn Cabrera, Preet Toor, and Eric M. Weiss.

The Systems Support Division provided the table composition system. Robert Joseph Brown, TableImage Processing System (TIPS) Senior Software Engineer, was responsible for the design anddevelopment of the TIPS, under the supervision of Robert J. Bateman, Assistant Division Chief,Information Systems.

Kim D. Ottenstein and Margaret A. Smith of the Administrative and Customer Services Division,Walter C. Odom, Chief, provided publications and printing management, graphics design andcomposition, and editorial review for print and electronic media. General direction and productionmanagement were provided by James R. Clark, Assistant Chief, and Susan L. Rappa, Chief,Publications Services Branch.

The staff of the National Processing Center, Judith N. Petty, Chief, performed mailout preparation andreceipt operations, clerical and analytical review activities, telephone operations, and data entry assistedby Carlene Bottorff, Karen S. Blessett, Sandra Hurst, and Debbie Woods.

Special acknowledgment is also due to the many respondents whose cooperation contributed to thepublication of these data.

Please direct inquiries concerning this report to John P. Miller, U.S. Census Bureau, 4700 Silver HillRoad, Mail Stop 6500, Washington, DC 20233-6500. Call 301-763-2797 or 301-457-2278 (fax).

ACKNOWLEDGMENTS

Montana: 2002

2002 Economic Census


Geographic Area Series

Issued September 2004

EC02TV-MT

U.S. Department of CommerceDonald L. Evans,

SecretaryTheodore W. Kassinger,

Deputy Secretary

Economics and Statistics AdministrationKathleen B. Cooper,

Under Secretary forEconomic Affairs

U.S. CENSUS BUREAUCharles Louis Kincannon,

Director

Vacant,Principal AssociateDirector for Programs

Frederick T. Knickerbocker,Associate Directorfor Economic Programs

Thomas L. Mesenbourg,Assistant Directorfor Economic Programs

Mark E. Wallace,Chief, Service SectorStatistics Division

ECONOMICS

AND STATISTICS

ADMINISTRATION

Economicsand StatisticsAdministration

Kathleen B. Cooper,Under Secretaryfor Economic Affairs

U.S. CENSUS BUREAU

Charles Louis Kincannon,Director

Hermann Habermann,Deputy Director andChief Operating Officer

CONTENTS

Vehicle Inventory and Use Survey 1��

Tables

1a. Trucks�Comparative Summary: 2002 and Earlier Years 11��

1b. Trucks�Comparative Summary for Trucks, Excluding Pickups,Minivans, Other Light Vans, and Sport Utilities: 2002 and1997 11��

2a. Trucks, Truck Miles, and Average Annual Miles for All Trucks:2002 and 1997 12��

2b. Trucks, Truck Miles, and Average Annual Miles for All Trucks�Measures of Sampling Variability: 2002 and 1997 18��

3a. Trucks, Truck Miles, and Average Annual Miles for Trucks,Excluding Pickups, Minivans, Other Light Vans, and SportUtilities: 2002 and 1997 24��

3b. Trucks, Truck Miles, and Average Annual Miles for Trucks,Excluding Pickups, Minivans, Other Light Vans, and SportUtilities�Measures of Sampling Variability: 2002 and 1997 30��

4. Trucks by Vehicle Size: 2002 36��

5. Trucks by Truck Type: 2002 41��

6. Truck Miles by Vehicle Size: 2002 46��

7. Truck Miles by Truck Type: 2002 51��

8. Truck Miles Distribution by Operational Characteristics: 2002 56��

Appendix

Approximating Unpublished Relative Standard Errors A–1��

Vehicle Inventory and Use Survey Contents iiiU.S. Census Bureau, 2002 Economic Census


The Vehicle Inventory and Use Survey (VIUS) provides data on the physical and operational charac-teristics of the nation’s truck population. This survey is conducted every 5 years as part of theeconomic census. Its primary goal is to produce national and state-level estimates of the totalnumber of trucks.

The 2002 VIUS is a probability sample of private and commercial trucks registered (or licensed) inthe United States as of July 1, 2002.1 A sample of about 136,000 trucks was surveyed to measurethe characteristics of nearly 89 million trucks registered in the United States. The VIUS excludesvehicles owned by federal, state, and local governments; ambulances; buses; motor homes; farmtractors; unpowered trailer units; and trucks reported to have been disposed of prior to January 1,2002.

Registration practices for commercial vehicles differ greatly among the states. Some states regis-ter a truck-tractor semitrailer combination as a single unit; others register the tractor and thesemitrailer separately. For either method of registration, only truck-tractors are included in theregistered truck counts. In addition, some states allow pickups, small vans, and sport utilityvehicles to be registered as either cars or trucks. Therefore, passenger car files were searched andany such vehicles were included in the sampling frame. Some vehicles, such as ‘‘off-highway’’trucks used exclusively on private property, are not required to be registered. These vehicles werenot included in the sampling frame and had no chance of being selected for the survey.

PURPOSE AND USE OF DATA

The economic census is the major source of facts about the structure and functioning of thenation’s economy. It provides the framework for such composite measures as the gross domesticproduct, input/output measures, production and price indexes, and other statistical series thatmeasure short-term changes in economic conditions.

VIUS data are of considerable value to government, business, academia, and the general public.Data on the number and types of vehicles and how they are used are important in studying thefuture growth of transportation and are needed in calculating fees and cost allocations amonghighway users. The data also are important in evaluating safety risks to highway travelers and inassessing the energy efficiency and environmental impact of the nation’s truck fleet. Businessesand others make use of these data in conducting market studies and evaluating market strategies;assessing the utility and cost of certain types of equipment; calculating the longevity of products;determining fuel demands; and linking to, and better utilizing, other data sets representing lim-ited segments of the truck population.

COMPARABILITY WITH PREVIOUS SURVEYS

The results of the 2002 VIUS are comparable, in most instances, to the results of the 1997 VIUSand prior Truck Inventory and Use Surveys (TIUS). Specific changes are as follows:

1Due to difficulty in obtaining up-to-date vehicle registration records for New Hampshire, the sample wasdrawn as of September 1, 2001, for this state.

Introduction 1Vehicle Inventory and Use Survey

U.S. Census Bureau, 2002 Economic Census

1. Business (formerly Major Use).

Changed—

• The kind of business was converted from a Standard Industrial Classification (SIC) basis toa North American Industry Classification System (NAICS) basis. Even though category head-ings may appear similar, differences in the classification systems should be taken intoaccount for comparability purposes.

2. Body Type.

New—

• Categories that were added are: armored; concrete pumper; curtainside; mobile hometoter; street sweeper; vacuum; and van, other.

Changed—

• The station wagon category was collapsed into the sport utility category.

• The grain body category was collapsed into the open top van category.

• The platform with added devices category was collapsed into the flatbed, stake, or plat-form category.

• The category ‘‘Winch or crane’’ was changed to ‘‘Crane’’ (winch was added as a category tothe equipment type section).

Deleted—

• The oilfield truck and yard tractor categories were dropped.

3. Primary Jurisdiction (formerly Base of Operation).

Changed—

• Estimates were previously calculated for the percentage of miles traveled outside the base-of-operation state. For 2002 estimates are calculated based on jurisdictions in which thevehicle traveled. Estimates of miles traveled in Canada, Mexico, and states other than thehome base state are also provided.

4. Months Operated (formerly Weeks Operated).

New—

• The ‘‘Vehicle not used’’ category was added.

Changed—

• Categories for time operated were changed from weekly intervals to monthly intervals.

5. Average Weight (Pounds).

Changed—

• The category ‘‘6,001 to 10,000’’ was split into ‘‘6,001 to 8,500’’ and ‘‘8,501 to 10,000.’’

6. Total Length (Feet).

New—

• Categories representing lengths of 45 feet up to 80 feet or more were added.

7. Vehicle Acquisition.

Deleted—

• The categories ‘‘Leased from someone else’’ and ‘‘Other’’ were dropped.

2 Introduction Vehicle Inventory and Use Survey


8. Lease Characteristics.

New—

• Categories for the length of the leasing agreement were added.

• The category ‘‘Fuel contract’’ was added to the provisions of lease section.

Changed—

• The leased section includes a breakout between lessee and lessor.

• The categories ‘‘Leased with driver other than owner-operator’’ and ‘‘Leased with owner-operator’’ were collapsed into the category ‘‘Vehicle with driver.’’

Deleted—

• The categories ‘‘Maintenance on specific parts’’ and ‘‘Other’’ were dropped from the provi-sions of lease section.

9. Primary Operator Classification.

New—

• A section for source of hauls was added.

Changed—

• There is limited comparability for this section due to significant changes in the categoriesand definitions.

Deleted—

• The section ‘‘For-hire jurisdiction’’ was dropped.

• The category ‘‘Exempt’’ was dropped from the type of carrier section.

10. Hazardous Materials Carried.

Deleted—

• All detailed hazardous material data lines were dropped except in Table 8 where distrib-uted mileage appears.

11. Equipment Type.

New—

• Categories added to the equipment type section are: aerial work platform/bucket, air com-pressor, air springs, collision warning system, computerized drive train control unit, crane,hoist, idle-reducing technology, internet access, lift gate, mounting bar for snowplow,power take-off, toolbox, and winch.

• A section for transmission type was added.

Changed—

• The trip recorder or on-board computer category was broken out into categories distin-guishing with or without communication capabilities.

• Categories for radial tires and road speed governor were moved from the fuel conservationequipment section to the equipment type section.

• The front-wheel drive category was moved from the driving wheels section to the equip-ment type section.

Deleted—

• Categories for power steering and electronic vehicle management system were dropped.



12. Fuel Type and Engine Size (formerly Engine Type and Size).

New—

• Respondents were permitted to report fuel combinations if used most often during theyear.

Changed—

• The ‘‘Liquefied gas or other’’ category has been broken out into categories for natural gas,propane, alcohol fuels, electricity, and combination.

13. Refueling Location.

Changed—

• Response categories were changed significantly. No comparable 1997 data are available forthis section.

14. Maintenance.

Deleted—

• The category for component distributorship was dropped from the general maintenancesection.

15. Truck Type and Axle Arrangement.

New—

• The category ‘‘4 axles or more’’ for single-unit trucks and truck tractors without trailer wasbroken out into ‘‘4 axles’’ and ‘‘5 axles or more.’’

• Sections for total liftable axles and locations and total liftable axles and number of brakingaxles were added.

Changed—

• A truck-tractor, if not in operation, was grouped with the single-unit trucks.

• The subgroupings for single-unit truck with trailer and single-unit truck with utility trailerwere combined.

• The category ‘‘7 axles or more’’ for truck-tractors with double trailers was broken out into‘‘7 axles’’ and ‘‘8 axles or more.’’

• The category ‘‘8 axles or more’’ for truck-tractors with triple trailers was broken out into ‘‘8axles,’’ ‘‘9 axles,’’ and ‘‘10 axles or more.’’

Deleted—

• The category for trailer not specified was dropped.

16. Cab Type.

New—

• Categories for conventional cab or cab over engine with or without a sleeper were added.

Deleted—

• The category ‘‘Other’’ was dropped.

17. Additional Changes.

Not applicable. This category was added to some sections to make the detail lines add tototal.



Primary products carried. Truck count detail lines for products carried were dropped fromall tables. Distributed mileage for products carried appears in Table 8. Product mileage doesnot sum to 100 percent because multiple products may be carried at the same time. Productscarried, which somewhat followed the SIC system, are now based on the Standard Classifica-tion of Transported Goods (SCTG).

Truck fleet size. This section was dropped from all tables.

Fuel conservation equipment. This section was dropped from all tables.

The driving wheels section for pickups, panels, vans, sport utilities and station wagons(4-wheel drive and 2-wheel drive) was dropped.

Table layout. The table layout for the 2002 state publication has changed significantly fromthe table layout used for the 1997 state publication. Some of the changes include:

1. Table 2 is broken out into Tables 2a (trucks, truck miles, and average annual miles for alltrucks), 3a (trucks, truck miles, and average annual miles for trucks, excluding pickups,minivans, other light vans, and sport utilities), 2b (measures of sampling variability forTable 2a), and 3b (measures of sampling variability for Table 3a).

2. Tables 4, 5, 6, 7, and 8 are new:

a. Table 4 contains estimates of the number of trucks by vehicle size.

b. Table 5 contains estimates of the number of trucks by truck type.

c. Table 6 contains estimates of the number of miles traveled by vehicle size.

d. Table 7 provides estimates of the number of miles traveled by truck type.

e. Table 8 shows estimates of the number of truck miles distribution by operational char-acteristics.

EXPLANATION OF TERMS

Business. This item is based on the business or the part of the business in which the vehiclewas used. The 15 specific business use categories are self-explanatory and are roughly based onNAICS sectors. Responses in the ‘‘Other’’ category were recoded, if possible, to one of the 15 spe-cific business categories.

Body type. This item describes the type of body that is permanently attached to the power unit(i.e., straight or single-unit truck). For truck-tractors, the body type is defined as the type of trailermost often pulled.

Minivans. This body type category includes minivans that are manufactured on either a truck orpassenger car chassis.

Annual miles. This item represents the annual miles traveled. When a respondent had partial-year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when notowned by the respondent.

Vehicle size. This item is determined by the average vehicle weight (empty vehicle weight pluscargo weight) during 2002. The four size classes are:

1. Light. The average vehicle weight is 10,000 pounds or less.

2. Medium. The average vehicle weight is 10,001 to 19,500 pounds.

3. Light-heavy. The average vehicle weight is 19,501 to 26,000 pounds.

4. Heavy-heavy. The average vehicle weight is 26,001 pounds or more.



Primary operator classification. This item is defined as follows:

1. Personal transportation. This is a vehicle operated for personal use, such as travel towork, carpooling, pleasure driving, etc.

2. Rental. This is a vehicle operated for daily or short-term rental.

3. Private. This is a vehicle operated to carry goods owned by the respondent, or for internalcompany business.

4. Motor carrier. This is a vehicle operated by a company and hired to carry other people’sgoods.

5. Owner operator. This is a vehicle operated by an independent trucker hired to carry otherpeople’s goods.

Hazardous materials. This item identifies those trucks that transport hazardous materials inquantities large enough to have a placard on the vehicle required by 49 CFR Part 172 Subpart F.

Truck miles distribution. Table 8 shows the distribution of annual miles by the actual percent-age of use for selected activities of each truck. Mileage estimates presented in all other tables ofthis report represent 100 percent of the individual truck’s mileage based on primary activity,regardless of any secondary operational activities.

SAMPLE DESIGN

The sampling frame was constructed from files of truck registrations identified as being active asof July 1, 2002.2 The frame was stratified by geography and truck characteristics. The 50 statesand the District of Columbia made up the 51 geographic strata. Body type and gross vehicleweight (GVW) determined the following five truck strata: 1) pickups; 2) minivans, other light vans,and sport utilities; 3) light single-unit trucks (GVW < 26,000 lb); 4) heavy single-unit trucks(GVW ≥ 26,000 lb; and 5) truck-tractors. Therefore, the sampling frame was partitioned into 255geographic-by-truck strata. Within each stratum, a simple random sample of truck registrationswas selected without replacement. This produced a total sample of approximately 136,000 truckregistrations.

The sample size for Montana is 2,623 truck registrations.

Estimation

An estimate of the number of trucks for a particular state and truck characteristic was computedin the following manner. Weighted estimates of the number of trucks having the characteristic ofinterest were computed for each of the five truck strata. The weight for a given truck was theproduct of two factors—the reciprocal of the truck’s probability of selection and a nonresponseadjustment factor. (See the Nonsampling Error section for a description of the nonresponseadjustment procedure.) The truck stratum estimates were summed to form a state-level estimate.Two types of truck miles estimates are provided. Distributed truck miles estimates, as shown inTable 8, were computed by apportioning each truck’s annual miles into the appropriate categorybased on the percent of miles driven in the category as reported by the respondent. Truck milesestimates presented in all other tables were computed by attributing 100 percent of an individualtruck’s annual miles to the category with the greatest reported percentage. For example, say aparticular truck was driven 50,000 miles in the survey year and the respondent indicated 80 per-cent of the trips were between 201 and 500 miles from the home base, while 20 percent of thetrips were between 101 and 200 miles from the home base. In Table 8, 40,000 miles would betabulated in the ’’201 to 500 miles’’ category and 10,000 miles would be tabulated in the ‘‘101 to200 miles’’ category. In all other tables, 50,000 miles would be tabulated in the ‘‘201 to 500miles’’ category. To compute an estimate of the average miles per truck, the total miles estimatewas divided by the number of trucks estimate for the characteristic of interest.

2The sampling frame included trucks registered as of September 1, 2001, for New Hampshire.



DATA COLLECTION

A questionnaire was mailed to the registered owner of each selected truck registration. This regis-trant was requested to provide data about the truck identified by the vehicle registration informa-tion imprinted on the questionnaire. The information provided by each respondent was subjectedto extensive computer edits. Questionable responses were reviewed and corrected when neces-sary.

RELIABILITY OF THE ESTIMATES

The total error of an estimate based on a sample survey is the difference between the estimateand the population parameter that it estimates. This error may be considered to be comprised ofsampling error and nonsampling error. Sampling error is the difference between the estimate andthe result that would be obtained from a complete enumeration of the sampling frame conductedunder the same survey conditions. This error occurs because characteristics differ among sam-pling units and because only a subset of the entire population is measured in a sample survey.Nonsampling error encompasses all other factors that contribute to the total error of a sample sur-vey estimate. The accuracy of a survey result may be affected by these two types of errors.

Sampling and nonsampling errors are often measured by the quantities, bias and variance. Thebias of an estimator of a population parameter is the difference, averaged over all possiblesamples of the same size and design, between the estimator and the population parameter beingestimated. (The population parameter is usually unknown.) Any systematic error, or inaccuracythat affects all samples of a specified design in a similar way, may bias the resulting estimates.The variance of an estimator is the squared difference, averaged over all possible samples of thesame size and design, between the estimator and its average value.

Measures of Sampling Variability

Because the estimates are based on a sample, exact agreement with the results that would beobtained from a complete enumeration of the truck registrations on the sampling frame is notexpected. However, because each truck included on the sampling frame has a known probabilityof being selected into the sample, it is possible to estimate the sampling variability of the surveyestimates.

The particular sample used in this survey is one of a large number of samples of the same sizethat could have been selected using the same design. If all possible samples had been surveyedunder the same conditions, an estimate of the population parameter of interest could have beenobtained from each sample. These samples give rise to a distribution of estimates for the popula-tion parameter. A statistical measure of the variability among these estimates is the standarderror, which can be approximated from any one sample. The standard error is defined as thesquare root of the variance. The coefficient of variation (or relative standard error) of an estimatoris the standard error of the estimator divided by the estimator. Note that measures of samplingvariability, such as the standard error and coefficient of variation, are estimated from the sampleand are also subject to sampling variability. (Technically, we should refer to the estimated stan-dard error or the estimated coefficient of variation of an estimator. However, for the sake of brev-ity, we have omitted this detail.) It is important to note that the standard error and coefficient ofvariation only measure sampling variability. They do not measure any systematic biases in theestimates. The U.S. Census Bureau recommends that individuals using estimates contained in thisreport incorporate this information into their analyses, as sampling error could affect the conclu-sions drawn from these estimates.

An estimate from a particular sample and the standard error associated with the estimate can beused to construct a confidence interval. A confidence interval is a range about a given estimatorthat has a specified probability of containing the result of a complete enumeration of the samplingframe conducted under the same survey conditions. Associated with each interval is a percentageof confidence, which is interpreted as follows. If, for each possible sample, an estimate of a popu-lation parameter and its approximate standard error were obtained, then:



1. For approximately 90 percent of the possible samples, the interval from 1.645 standard errorsbelow to 1.645 standard errors above the estimate would include the population parameter asobtained from a complete enumeration of the sampling frame conducted under the same sur-vey conditions.

2. For approximately 95 percent of the possible samples, the interval from 1.96 standard errorsbelow to 1.96 standard errors above the estimate would include the population parameter asobtained from a complete enumeration of the sampling frame conducted under the same sur-vey conditions.

To illustrate the computation of a confidence interval for an estimate of the number of trucks,assume that an estimate of trucks is 3,377.8 thousand and the coefficient of variation for this esti-mate is 2.9 percent, or 0.029. First obtain the standard error of the estimate by multiplying thenumber of trucks estimate by its coefficient of variation. For this example, multiply 3,377.8 thou-sand by 0.029. This yields a standard error of 97.9562 thousand. The upper and lower bounds ofthe 90-percent confidence interval are computed as 3,377.8 thousand plus or minus 1.645 times97.9562 thousand. Consequently, the 90-percent confidence interval is 3,216.7 thousand to3,538.9 thousand. If corresponding confidence intervals were constructed for all possible samplesof the same size and design, approximately 9 out of 10 (90 percent) of these intervals would con-tain the result obtained from a complete enumeration of all trucks on the sampling frame.

Nonsampling Error

Nonsampling error encompasses all other factors that contribute to the total error of a sample sur-vey estimate and may also occur in censuses. It is often helpful to think of nonsampling error asarising from deficiencies or mistakes at some point in the survey process. Nonsampling error canbe attributed to many sources: (1) inability to obtain information about all trucks in the sample,(2) response errors, (3) differences in the interpretation of the questions, (4) mistakes in coding orkeying the data obtained, and (5) other errors of collection, response, coverage, and processing.Although no direct measurement of the potential biases due to nonsampling error has beenobtained, precautionary steps were taken in all phases of the collection, processing, and tabula-tion of the data in an effort to minimize its influence.

A potential source of bias in the estimates is nonresponse. Nonresponse is defined as the failureto obtain all the intended measurements or responses about all the trucks in the sample. Twotypes of nonresponse are often distinguished. Unit nonresponse is used to describe the failure toobtain any of the substantive measurements about a sampled truck. In most cases of unit nonre-sponse, the questionnaire was never returned to the Census Bureau after several attempts to elicita response. For Montana, approximately 77.8 percent of the questionnaires were returned withsubstantive data. Item nonresponse occurs either when a question is unanswered or the responseto the question fails computer or analyst edits. The procedures used to account for unit and itemnonresponse are discussed below.

Unit nonresponse is handled in the estimation procedure by reweighting. To apply this method ofnonresponse adjustment, we make the assumption that the population of trucks can be dividedinto a finite number of mutually exclusive adjustment cells so that within each cell, all the popula-tion elements possess similar characteristics and share a similar probability of responding, ifselected into the sample. The adjustment cells for the 2002 VIUS are identical to the samplingstrata. A nonresponse adjustment factor is computed for each adjustment cell and is equal to theratio of the number of truck registrations selected into the sample to the number of responsesreceived within each cell. In this sense, reweighting allocates characteristics to the nonrespon-dents in proportion to the characteristics observed for the respondents within each adjustmentcell. The amount of bias introduced by this nonresponse adjustment procedure depends on theextent to which the nonrespondents differ, characteristically, from the respondents in each adjust-ment cell.

For item nonresponse, a missing value is replaced by a predicted value obtained from an appropri-ate model for nonresponse. This procedure is called imputation. To impute annual miles and life-time miles, we divide the sample into a finite number of mutually exclusive cells based on state of



registration, and related vehicle characteristics. For each cell, estimates of average annual milesand average lifetime miles are computed based on those trucks in the cell for which annual milesand lifetime miles have been reported. Missing values are then replaced with the appropriate aver-age values. A slightly different imputation procedure is used to impute length and average weight(empty weight plus cargo weight). For these data items, we replace a missing value with datafrom a truck with similar characteristics for which length and average weight have been reported.

For all other data items, no imputation is performed. Instead, separate estimates are published ina ‘‘Not reported’’ category. For example, a respondent who did not indicate the type of business inwhich his/her truck was used would be included in the estimate for the ‘‘Not reported’’ category.Users of the estimates should exercise caution when allocating the estimate for the ‘‘Not reported’’category to the estimates for the reported categories in the proportions observed for the reportedcategories. This is because the characteristics of the trucks for which we obtained informationmay differ significantly from those trucks for which we obtained no information.

Unpublished Estimates

Additional statistics not shown in the tables are obtainable by tabulating records on a CD-ROMcontaining the survey microdata. These additional estimates have not been included in this publi-cation because of high sampling variability, poor response, or other factors that may make thempotentially misleading. It should be noted that some unpublished estimates can be deriveddirectly from this report by subtracting published estimates from their respective totals. However,the estimates obtained by such subtraction would be subject to the poor response rates or highsampling variability as previously described.

Individuals who use estimates in this report, or the CD-ROM microdata, to create estimates notpublished by the Census Bureau should cite the Census Bureau as the source of only the publishedestimates or the microdata used, and not as the source of the new estimates.

CONFIDENTIALITY AND DISCLOSURE

Title 13 of the United States Code authorizes the Census Bureau to conduct censuses and surveys.Section 9 of the same Title requires that any information collected from the public under theauthority of Title 13 be maintained as confidential. Section 214 of Title 13 and Sections 3559 and3571 of Title 18 of the United States Code provide for the imposition of penalties of up to fiveyears in prison and up to $250,000 in fines for wrongful disclosure of confidential census infor-mation. In accordance with Title 13, no estimates are published that would disclose the opera-tions of an individual firm.

The Census Bureau’s internal Disclosure Review Board sets the confidentiality rules for all datareleases. A checklist approach is used to ensure that all potential risks to the confidentiality of thedata are considered and addressed.

A disclosure of data occurs when an individual can use published statistical information to iden-tify either an individual or firm that has provided information under a pledge of confidentiality.Disclosure limitation is the process used to protect the confidentiality of the survey data providedby an individual or firm. Using disclosure limitation procedures, the Census Bureau modifies orremoves the characteristics that put confidential information at risk for disclosure. Although itmay appear that a table shows information about a specific individual or business, the CensusBureau has taken steps to disguise or suppress the original data while making sure the results arestill useful. The techniques used by the Census Bureau to protect confidentiality in tabulationsvary, depending on the type of data.

SYMBOLS

The following symbols are used in this publication:

N Not available.S Estimate does not meet publication standards because of high sampling variability or

poor response quality.V Represents an estimate of less than 50 vehicles, 50,000 miles, or 0.05 percent.



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Table 1a. Trucks�Comparative Summary: 2002 and Earlier Years[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys, and the 1992 and 1987 Truck Inventory and Use Surveys. Because of rounding,estimates may not be additive]

Vehicular and operational characteristics 2002 1997 1992 1987

Total 100.0�� 100.0 100.0 100.0

BUSINESS1

Agriculture, forestry, fishing, or hunting 10.7�� 15.5 14.9 21.6Mining .1�� 1.0 .6 1.0Construction 5.1�� 7.2 6.5 5.9Manufacturing S�� S .7 .2Wholesale and retail trade 2.7�� 3.3 4.8 4.4

For�hire transportation or warehousing .5�� 1.6 2.4 1.7Utilities and all services 5.2�� 5.1 3.9 4.4Personal transportation 70.4�� 64.4 64.4 60.2Other, not reported, and not applicable 4.7�� 1.7 1.8 .6

BODY TYPEPickup, minivan, other light vans, and sport utility 92.3�� 89.6 90.0 89.0Flatbed, stake, platform, and low boy 2.2�� 3.9 4.3 5.0Van2 2.1�� 1.3 1.2 .9Service, utility .4�� .2 .3 .1Van, step, walk�in, or multistop .2�� .1 .3 .6

Dump 1.5�� 1.1 .8 .8Tank for liquids, gases, or dry bulk .4�� .4 .6 .6Other and not applicable .8�� 3.4 2.6 3.0

VEHICLE SIZELight 91.2�� 89.9 90.5 90.4Medium 3.0�� 3.0 3.1 2.3Light�heavy 2.1�� 2.1 2.1 3.0Heavy�heavy 3.7�� 5.0 4.3 4.3

ANNUAL MILESLess than 5,0003 37.2�� 32.0 32.0 37.65,000 to 9,999 21.9�� 22.5 24.4 29.410,000 to 19,999 28.4�� 31.3 29.7 23.620,000 to 29,999 9.5�� 9.2 8.6 6.030,000 or more 3.0�� 5.1 5.2 3.5

Vehicular and operational characteristics 2002 1997 1992 1987

MODEL YEAR

1 to 2 years old 3.7�� 8.6 11.0 6.43 to 4 years old 11.7�� 12.8 10.7 10.0Over 4 years old 84.6�� 78.6 78.3 83.5

VEHICLE ACQUISITION

New 28.5�� 31.5 35.3 35.6Used 68.2�� 66.2 62.9 62.5Not reported4 3.3�� 2.3 1.8 1.9

TRUCK TYPE

Single�unit trucks5 95.4�� 94.8 95.1 97.02 axles 94.1�� 93.4 94.0 95.93 axles or more 1.3�� 1.4 1.1 1.1Trailer/axles not specified V�� N N N

Combinations 4.6�� 5.2 4.9 3.03 axles 1.2�� .1 .3 .44 axles 2.1�� 2.6 2.0 .95 axles or more 1.0�� 2.5 2.6 1.7Trailer/axles not specified .3�� V V V

RANGE OF OPERATION

50 miles or less 65.3�� 63.9 60.8 67.151 to 200 miles 14.9�� 17.5 22.9 17.7201 miles or more 4.9�� 9.8 7.5 5.8Off�the�road, not reported, and not applicable 14.8�� 8.8 8.8 9.4

FUEL TYPE

Gasoline 86.5�� 88.0 89.7 93.8All other fuels 10.0�� 11.6 9.8 6.0Other, not reported, and not applicable 3.5�� .4 .5 .2

N Not available. S Estimate does not meet publication standards because of high sampling variability or poor response quality. V Represents an estimate of less than 50 vehicles, 50,000miles, or 0.05 percent.

1Comparability of estimates may vary across survey years due to changes in category definitions.2Includes open top trailers and all van except step, walk�in, or multistop.3Includes vehicles not in use.4For survey years prior to 2002, this includes vehicles leased from someone else.5Excludes truck�tractors not in use.

Note: The Introduction gives information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found atwww.census.gov/svsd/www/02vehinv.html.

Table 1b. Trucks�Comparative Summary for Trucks, Excluding Pickups, Minivans, Other LightVans, and Sport Utilities: 2002 and 1997

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 1997

Total 100.0�� 100.0

BUSINESS1

Agriculture, forestry, fishing, or hunting 49.6�� 45.2Mining 1.6�� 1.3Construction 17.8�� 16.0Manufacturing .8�� 1.3Wholesale and retail trade 7.9�� 9.7

For�hire transportation or warehousing 3.8�� 13.6Utilities and all services 11.0�� 7.0Personal transportation S�� 3.7Other, not reported, and not applicable 7.1�� 2.2

BODY TYPEFlatbed, stake, platform, and low boy 28.1�� 37.7Van2 27.8�� 12.1Service, utility 5.4�� 1.8Van, step, walk�in, or multistop 3.0�� 1.3Dump 19.8�� 10.6Tank for liquids, gases, or dry bulk 5.6�� 3.7Other and not applicable 10.4�� 32.4

VEHICLE SIZELight 5.7�� 17.2Medium 19.3�� 15.0Light�heavy 27.4�� 20.0Heavy�heavy 47.6�� 47.8

ANNUAL MILESLess than 5,0003 64.3�� 51.65,000 to 9,999 13.9�� 14.510,000 to 19,999 11.4�� 10.620,000 to 29,999 5.9�� 4.730,000 or more 4.5�� 18.6

Vehicular and operational characteristics 2002 1997

MODEL YEAR1 to 2 years old 1.9�� 5.93 to 4 years old 4.2�� 6.5Over 4 years old 93.9�� 87.6

VEHICLE ACQUISITIONNew 23.4�� 27.2Used 73.3�� 65.8Not reported4 3.3�� 7.0

TRUCK TYPESingle�unit trucks5 80.9�� 71.8

2 axles 64.3�� 57.93 axles or more 16.6�� 13.9Trailer/axles not specified V�� N

Combinations 19.1�� 28.23 axles .9�� 1.04 axles 2.8�� 3.45 axles or more 13.5�� 23.8Trailer/axles not specified 1.9�� V

RANGE OF OPERATION50 miles or less 56.9�� 50.251 to 200 miles 13.8�� 15.9201 miles or more 2.9�� 14.1Off�the�road, not reported, and not applicable 26.4�� 19.8

FUEL TYPEGasoline 50.8�� 51.1All other fuels 44.7�� 46.8Other, not reported, and not applicable 4.4�� 2.0


1Comparability of estimates may vary across survey years due to changes in category definitions.2Includes open top trailers and all van except step, walk�in, or multistop.3Includes vehicles not in use.4For survey years prior to 2002, this includes vehicles leased from someone else.5Excludes truck�tractors not in use.

Note: The Introduction gives information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be found atwww.census.gov/svsd/www/02vehinv.html.

Vehicle Inventory and Use Survey Montana 11U.S. Census Bureau, 2002 Economic Census

Table 2a. Trucks, Truck Miles, and Average Annual Miles for All Trucks: 2002 and 1997[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics 2002 trucks(thousands)

1997 trucks(thousands)

Percentchange

2002 truckmiles

(millions)

1997 truckmiles

(millions)Percentchange

2002 averagemiles per

truck(thousands)


truck(thousands)

Percentchange

A B C D E F G H I

Total 473.5�� 417.2 13.5 4 465.6 4 733.9 –5.7 9.4 11.3 –16.9

BUSINESS1

For�hire transportation or warehousing 2.3�� 6.5 –64.7 S 553.7 S S 85.1 SVehicle leasing or rental S�� S S S S S S S SAgriculture, forestry, fishing, or hunting 50.5�� 64.5 –21.7 286.9 580.9 –50.6 5.7 9.0 –36.9Mining .6�� 4.2 –85.8 4.3 39.7 –89.2 7.3 9.6 –23.7Utilities 8.0�� 4.0 97.7 106.4 74.7 42.5 13.3 18.5 –27.9

Construction 24.3�� 30.1 –19.2 302.6 412.2 –26.6 12.4 13.7 –9.1Manufacturing S�� S S S S S S S SWholesale trade 2.8�� 4.2 –33.0 S 89.5 S S 21.6 SRetail trade 9.9�� 9.8 1.0 143.3 149.1 –3.9 14.5 15.3 –4.8Information services S�� N N S N N S N N

Waste management, landscaping, oradministrative/support services 2.6�� N N 14.3 N N 5.4 N N

Arts, entertainment, or recreation services S�� N N S N N S N NAccommodation or food services S�� N N S N N S N NOther services 9.7�� N N 130.9 N N 13.5 N NPersonal transportation 333.4�� 268.6 24.2 3 214.2 2 604.4 23.4 9.6 9.7 –.6Not reported 3.5�� V N S V S S V SNot applicable2 16.8�� 6.4 162.0 S S S S S S

BODY TYPE

Single�unit trucks 468.7�� 407.1 15.1 4 395.3 4 068.6 8.0 9.4 10.0 –6.2Pickup 286.0�� 259.4 10.2 2 420.4 2 535.7 –4.5 8.5 9.8 –13.4Minivan 32.2�� 27.3 17.8 453.0 397.7 13.9 14.1 14.6 –3.4Other light vans 23.0�� 15.4 49.0 271.1 113.8 138.3 11.8 7.4 60.0Sport utility 95.7�� 71.5 33.8 1 065.9 809.4 31.7 11.1 11.3 –1.6Armored S�� N N S N N S N N

Beverage S�� .3 S S S S S S SConcrete mixer .4�� .6 –20.1 3.4 5.4 –37.2 7.7 9.8 –21.4Concrete pumper S�� N N S N N S N NCrane S�� .3 S S 1.7 S S 6.2 SCurtainside S�� N N S N N S N N

Dump 6.5�� 3.8 69.5 24.5 23.3 4.9 3.8 6.1 –38.1Flatbed, stake, or platform 8.9�� 11.6 –23.6 45.6 57.5 –20.8 5.1 5.0 3.8Low boy S�� S S S S S S S SPole, logging, pulpwood, or pipe .2�� .3 –32.8 7.3 11.4 –36.1 32.8 34.5 –4.8Service, utility 2.0�� .8 154.2 19.7 4.3 353.2 10.0 5.6 78.3

Service, other .8�� 1.2 –35.5 5.6 14.5 –61.1 7.5 12.4 –39.8Street sweeper S�� N N S N N S N NTank, dry bulk .3�� S S .9 S S 3.4 S STank, liquids or gases 1.5�� 1.3 18.7 14.0 25.4 –44.8 9.2 19.8 –53.5Tow/Wrecker .6�� .4 31.8 2.8 2.5 12.2 5.0 5.9 –14.9

Trash, garbage, or recycling .4�� .6 –25.9 7.7 3.6 115.8 17.4 6.0 191.1Vacuum .1�� N N S N N S N NVan, basic enclosed 1.4�� 1.5 –3.2 7.0 17.4 –60.0 4.9 11.9 –58.7Van, insulated nonrefrigerated S�� V S S V S S V SVan, insulated refrigerated .4�� .3 15.0 4.9 S S 12.7 S S

Van, open top 6.4�� 8.4 –23.5 11.7 22.6 –48.2 1.8 2.7 –32.2Van, step, walk�in, or multistop 1.1�� .6 94.5 18.9 5.5 245.0 17.3 9.8 77.4Van, other .4�� N N S N N S N NOther V�� N N V N N V N N

Truck�tractors 4.8�� 10.1 –52.2 70.3 665.3 –89.4 14.6 66.2 –77.9Automobile carrier V�� V N V V N V V NBeverage S�� S S S S S S S SCurtainside V�� N N V N N V N NDump .8�� .8 –1.8 11.6 40.9 –71.7 14.5 50.4 –71.2Flatbed, stake, or platform .9�� 2.7 –68.7 11.5 170.5 –93.3 13.5 62.7 –78.5

Livestock .3�� .5 –34.2 3.5 20.4 –83.0 11.7 45.2 –74.2Low boy .5�� .8 –33.3 4.9 34.4 –85.8 9.4 44.3 –78.7Mobile home toter S�� N N S N N S N NOpen top 1.1�� 1.3 –11.0 10.9 51.8 –79.0 9.6 40.7 –76.4Pole, logging, pulpwood, or pipe .2�� .5 –56.9 10.2 26.3 –61.4 48.6 54.2 –10.4

Tank, dry bulk .1�� S S 4.7 S S 33.7 S STank, liquids or gases .1�� .2 –40.3 4.1 14.8 –72.0 29.6 62.9 –53.0Van, basic enclosed .3�� 1.2 –77.6 5.0 103.2 –95.2 18.8 87.0 –78.4Van, drop�frame S�� .2 S S 10.4 S S 57.7 SVan, insulated nonrefrigerated V�� S S V S S V S S

Van, insulated refrigerated S�� 1.6 S S 181.4 S S 115.2 SOther V�� N N V N N V N NNot applicable3 .4�� N N V N N V N N

ANNUAL MILES

Less than 5,000 159.2�� 128.2 24.2 282.4 260.2 8.5 1.8 2.0 –12.65,000 to 9,999 103.9�� 93.8 10.7 716.0 638.6 12.1 6.9 6.8 1.310,000 to 19,999 134.5�� 130.4 3.1 1 723.8 1 726.0 –.1 12.8 13.2 –3.220,000 to 29,999 45.0�� 38.3 17.5 1 032.8 854.9 20.8 23.0 22.3 2.930,000 to 49,999 8.9�� 12.1 –26.7 320.4 434.0 –26.2 36.0 35.8 .7

50,000 to 74,999 3.3�� 4.1 –21.1 175.6 238.9 –26.5 53.9 57.8 –6.875,000 or more S�� 5.1 S S 581.2 S S 114.1 SNot applicable2 16.8�� 5.1 231.0 S V S S V S

See footnotes at end of table.

12 Montana Vehicle Inventory and Use SurveyU.S. Census Bureau, 2002 Economic Census

Table 2a. Trucks, Truck Miles, and Average Annual Miles for All Trucks: 2002 and 1997�Con.[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]



Percentchange

2002 truckmiles

(millions)

1997 truckmiles



truck(thousands)


truck(thousands)

Percentchange

A B C D E F G H I

PRIMARY RANGE OF OPERATION

Off�the�road 20.5�� 31.8 –35.4 85.9 203.1 –57.7 4.2 6.4 –34.550 miles or less 309.3�� 266.4 16.1 2 867.3 2 472.5 16.0 9.3 9.3 –.151 to 100 miles 47.6�� 54.3 –12.3 607.7 692.8 –12.3 12.8 12.8 .1101 to 200 miles 23.1�� 18.7 23.4 232.5 280.8 –17.2 10.1 15.0 –32.9201 to 500 miles 7.0�� 22.5 –68.7 106.5 523.6 –79.7 15.1 23.2 –34.9

501 miles or more 16.3�� 18.4 –11.3 211.9 561.1 –62.2 13.0 30.5 –57.4Not reported 32.9�� 5.1 549.2 344.9 V N 10.5 V NNot applicable2 16.8�� N N S N N S N N

PRIMARY JURISDICTION

Operated in Canada V�� N N V N N V N NOperated in Mexico V�� N N V N N V N NOperated within the home base state 419.3�� N N 4 064.0 N N 9.7 N NOperated in states other than the home basestate 14.8�� N N 217.2 N N 14.7 N N

Not reported 22.6�� N N 175.6 N N 7.8 N NNot applicable2 16.8�� N N S N N S N N

MONTHS OPERATED

12 289.5�� N N 3 599.0 N N 12.4 N N7 to 11 59.8�� N N 527.5 N N 8.8 N N2 to 6 79.9�� N N 313.8 N N 3.9 N N1 or less 27.4�� N N 16.6 N N .6 N NVehicle not used 16.8�� N N S N N S N N

VEHICLE SIZE

Light 432.0�� 375.1 15.2 4 148.6 3 808.4 8.9 9.6 10.2 –5.4Medium 14.1�� 12.6 12.0 125.7 118.4 6.2 8.9 9.4 –5.2Light�heavy 10.0�� 8.7 14.9 36.9 39.8 –7.3 3.7 4.6 –19.4Heavy�heavy 17.4�� 20.8 –16.2 154.4 767.3 –79.9 8.9 37.0 –76.0

AVERAGE WEIGHT (POUNDS)

Less than 6,001 288.4�� 324.3 –11.1 2 708.9 3 255.7 –16.8 9.4 10.0 –6.46,001 to 8,500 112.4�� N N 1 046.9 N N 9.3 N N8,501 to 10,000 31.1�� N N 392.8 N N 12.6 N N10,001 to 14,000 8.7�� 4.9 77.0 87.5 53.0 65.2 10.0 10.7 –6.714,001 to 16,000 2.7�� 5.6 –51.7 S 52.6 S S 9.4 S

16,001 to 19,500 2.6�� 2.0 30.6 17.3 12.8 35.3 6.6 6.4 3.719,501 to 26,000 10.0�� 8.7 14.9 36.9 39.8 –7.3 3.7 4.6 –19.426,001 to 33,000 4.3�� 4.0 6.4 26.7 29.9 –10.6 6.2 7.4 –16.033,001 to 40,000 1.7�� 1.9 –9.5 6.9 15.6 –56.0 4.0 8.3 –51.440,001 to 50,000 4.2�� 3.9 9.0 21.9 37.8 –41.9 5.2 9.7 –46.7

50,001 to 60,000 2.1�� 1.4 44.2 15.9 34.6 –54.2 7.6 24.0 –68.260,001 to 80,000 3.5�� 7.2 –52.3 42.9 509.8 –91.6 12.4 70.4 –82.380,001 to 100,000 1.0�� 1.1 –7.8 17.1 52.2 –67.2 16.8 47.2 –64.4100,001 to 130,000 .6�� 1.1 –47.0 22.7 85.2 –73.3 37.8 75.1 –49.7130,001 or more S�� S S S S S S S S

TOTAL LENGTH (FEET)

Less than 20.0 347.7�� 374.8 –7.2 3 148.6 3 793.7 –17.0 9.1 10.1 –10.520.0 to 27.9 71.0�� 17.0 316.4 691.2 85.9 704.3 9.7 5.0 93.128.0 to 35.9 27.1�� 12.5 117.7 306.3 136.8 124.0 11.3 11.0 2.936.0 to 40.9 16.9�� 2.2 665.8 197.4 34.3 474.7 11.7 15.6 –25.041.0 to 44.9 4.9�� .8 547.7 S 14.9 S S 19.6 S

45.0 to 49.9 1.0�� .6 64.9 6.8 13.6 –50.0 6.8 22.5 –69.750.0 to 54.9 1.0�� .6 64.6 9.2 14.6 –37.2 9.0 23.6 –61.955.0 to 59.9 1.1�� 1.4 –22.9 13.9 47.4 –70.7 13.1 34.4 –62.060.0 to 64.9 1.3�� 1.8 –29.8 19.1 103.6 –81.6 15.2 57.7 –73.765.0 to 69.9 .7�� 2.5 –72.1 8.9 207.6 –95.7 13.0 84.4 –84.6

70.0 to 74.9 .2�� 1.7 –85.7 5.4 179.2 –97.0 22.7 107.5 –78.975.0 to 79.9 .2�� N N 7.2 N N 37.1 N N80.0 or more .4�� N N 12.8 N N 34.0 N N

MILES PER GALLON

Less than 5 5.6�� 7.2 –23.2 51.2 168.5 –69.6 9.2 23.3 –60.55 to 6.9 9.9�� 16.9 –41.1 71.7 539.3 –86.7 7.2 31.9 –77.47 to 8.9 6.7�� 10.5 –36.3 42.2 70.9 –40.4 6.3 6.7 –6.59 to 10.9 52.4�� 51.2 2.4 347.0 346.9 V 6.6 6.8 –2.311 to 12.9 53.8�� 73.6 –26.9 385.5 663.7 –41.9 7.2 9.0 –20.613 to 14.9 47.7�� 52.1 –8.3 475.4 514.6 –7.6 10.0 9.9 .815 or more 237.8�� 199.6 19.1 2 731.2 2 351.7 16.1 11.5 11.8 –2.5

15 to 20.9 184.0�� 150.3 22.4 2 031.8 1 792.9 13.3 11.0 11.9 –7.421 to 24.9 35.1�� 37.9 –7.3 478.0 422.1 13.3 13.6 11.2 22.225 or more 18.7�� 11.4 63.5 221.4 136.7 61.9 11.8 11.9 –1.0

Not reported 42.8�� 6.1 603.1 352.6 78.2 350.7 8.2 12.9 –35.9Not applicable2 16.8�� N N S N N S N N






Percentchange

2002 truckmiles

(millions)

1997 truckmiles



truck(thousands)


truck(thousands)

Percentchange

A B C D E F G H I

MODEL YEAR

2003 V�� N N V N N V N N2002 S�� N N S N N S N N2001 15.8�� N N 236.3 N N 15.0 N N2000 28.0�� N N 460.3 N N 16.5 N N1999 27.5�� N N 393.6 N N 14.3 N N

1998 20.9�� S S 284.6 S S 13.6 S S1997 19.3�� 19.0 1.9 295.6 321.7 –8.1 15.3 17.0 –9.81996 19.5�� 16.5 18.1 379.6 353.4 7.4 19.5 21.4 –9.01995 25.6�� 21.8 17.4 318.6 422.3 –24.6 12.5 19.4 –35.71994 29.3�� 31.8 –7.8 383.6 575.5 –33.3 13.1 18.1 –27.71993 23.2�� 20.0 16.1 250.9 331.3 –24.3 10.8 16.6 –34.7Pre�1993 262.6�� 307.9 –14.7 1 453.6 2 713.4 –46.4 5.5 8.8 –37.2

VEHICLE ACQUISITION

New 134.9�� 131.3 2.8 1 446.9 1 931.8 –25.1 10.7 14.7 –27.1Used 323.0�� 276.1 17.0 2 827.2 2 527.6 11.9 8.8 9.2 –4.4Not reported 15.5�� 9.8 58.8 191.5 274.5 –30.2 12.4 28.1 –56.1

LEASE CHARACTERISTICS

Leased 8.1�� N N 117.6 N N 14.5 N NLessee 7.0�� N N 96.8 N N 13.8 N N

Vehicle only .7�� N N 14.6 N N 21.3 N NVehicle with driver V�� N N V N N V N NNot reported S�� N N S N N S N NNot applicable4 6.3�� N N 82.1 N N 13.0 N N

Lessor S�� N N S N N S N NVehicle only .1�� N N .8 N N 7.5 N NVehicle with driver .1�� N N S N N S N NNot reported V�� N N V N N V N NNot applicable4 S�� N N S N N S N N

Not reported S�� N N S N N S N NNot leased 254.3�� N N 2 425.5 N N 9.5 N NNot reported 211.1�� N N 1 922.6 N N 9.1 N N

Length of leasing agreement:Leased 8.1�� N N 117.6 N N 14.5 N N

1 to 11 months .1�� N N S N N S N N12 months or more .8�� N N 17.3 N N 21.0 N NNot reported S�� N N S N N S N NNot applicable4 7.2�� N N 99.5 N N 13.9 N N

Provisions of lease5:Financing only .7�� N N 15.4 N N 21.2 N NFull maintenance .2�� N N 3.0 N N 15.1 N NPayment of taxes .1�� N N 1.4 N N 9.9 N NObtaining licenses and permits .3�� N N 5.2 N N 18.0 N NRecordkeeping .3�� N N 4.4 N N 16.6 N NFuel contract .1�� N N S N N S N N

PRIMARY OPERATORCLASSIFICATION

Private 115.4�� N N 1 080.0 N N 9.4 N NMotor carrier 3.8�� N N S N N S N NOwner operator 2.1�� N N 33.3 N N 15.9 N NRental S�� N N S N N S N NPersonal transportation 333.4�� N N 3 214.2 N N 9.6 N NNot applicable2 16.8�� N N S N N S N N

For�hire characteristics:Type of carrier:

Contract 1.0�� N N 29.3 N N 29.6 N NCommon 1.7�� N N 31.1 N N 18.6 N NNot reported .5�� N N 7.7 N N 14.8 N NNot applicable6 470.3�� N N 4 397.5 N N 9.4 N N

Type of service:Truckload 1.8�� 4.3 –57.8 43.4 403.8 –89.2 23.7 92.8 –74.5Less�than truckload .8�� 1.2 –30.2 17.0 95.8 –82.3 21.0 82.9 –74.6Not reported .5�� N N 7.7 N N 14.3 N NNot applicable6 470.3�� N N 4 397.5 N N 9.4 N N

Source of hauls:Shippers or receivers 1.8�� N N 46.2 N N 26.1 N NBrokers S�� N N S N N S N NCentralized markets or exchanges S�� N N S N N S N NOther V�� N N V N N V N NNot reported 1.3�� N N 17.9 N N 14.1 N NNot applicable6 470.3�� N N 4 397.5 N N 9.4 N N

HAZARDOUS MATERIALS CARRIED7

Carrying hazardous materials 1.2�� 1.8 –31.5 17.8 62.0 –71.3 14.5 34.5 –58.0Not carrying hazardous materials 31.1�� 36.1 –13.8 221.2 727.3 –69.6 7.1 20.2 –64.7Not reported 2.3�� 6.0 –61.0 13.9 94.9 –85.4 6.0 15.9 –62.5Not applicable8 438.8�� N N 4 212.7 N N 9.6 N N

EQUIPMENT TYPE5 9

Aerial work platform/bucket 1.0�� N N 5.0 N N 5.3 N NAir bag(s) (safety device only) 159.2�� 60.3 164.2 2 242.3 1 031.4 117.4 14.1 17.1 –17.7Air compressor (except air brakes) 1.8�� N N 20.6 N N 11.6 N NAir�conditioning 284.6�� 218.1 30.5 3 451.2 3 248.3 6.2 12.1 14.9 –18.6Air springs 2.3�� N N 38.2 N N 16.7 N N






Percentchange

2002 truckmiles

(millions)

1997 truckmiles



truck(thousands)


truck(thousands)

Percentchange

A B C D E F G H I

EQUIPMENT TYPE5 9�Con.

Antilock brake system 192.3�� 121.0 58.9 2 636.7 1 936.5 36.2 13.7 16.0 –14.3Collision warning system .3�� N N 6.5 N N 22.8 N NComputerized drive train control unit 45.3�� N N 575.6 N N 12.7 N NCrane .7�� N N 6.0 N N 9.2 N NElectronic vehicle identification device S�� 1.1 S S 129.4 S S 115.1 S

Engine retarder/brake 6.4�� 8.5 –24.7 86.1 498.3 –82.7 13.4 58.5 –77.1Front�wheel drive 286.3�� 71.6 300.0 2 802.5 790.0 254.8 9.8 11.0 –11.3Hoist 14.4�� N N 44.6 N N 3.1 N NIdle�reducing technology (portable auxiliary pack,electrification, etc.) .3�� N N 6.2 N N 22.3 N N

Internet access V�� N N V N N V N N

Lift gate 1.5�� N N 13.7 N N 9.2 N NMounting bar for snowplow 5.6�� N N 26.7 N N 4.8 N NNavigational system V�� .4 N V 32.0 N V 87.2 NPower take�off 15.4�� N N 84.6 N N 5.5 N NRadial tires 317.2�� 334.5 –5.2 3 120.6 4 066.3 –23.3 9.8 12.2 –19.1

Reflective material in addition to those requiredby law 3.0�� 6.5 –53.6 32.2 254.5 –87.3 10.7 39.1 –72.7

Road speed governor 5.1�� 9.8 –48.0 58.8 436.3 –86.5 11.5 44.5 –74.1Toolbox 67.3�� N N 737.8 N N 11.0 N NTrip recorder or on�board computer withcommunication capabilities 8.4�� N N 93.1 N N 11.1 N N

Trip recorder or on�board computer withoutcommunication capabilities 59.2�� N N 677.1 N N 11.4 N N

Vehicle control aids for handicapped drivers V�� V N V V N V V NWheelchair lift S�� V S S V S S V SWinch 11.3�� N N 157.7 N N 13.9 N N

Transmission type:Automatic 272.0�� N N 3 161.7 N N 11.6 N NManual 191.8�� N N 1 199.5 N N 6.3 N NSemiautomated manual .2�� N N S N N S N NAutomated manual S�� N N S N N S N NNot reported 8.4�� N N 87.6 N N 10.4 N N

Braking system:Hydraulic (standard) 12.6�� 11.8 7.1 67.1 47.2 42.1 5.3 4.0 32.6Hydraulic with power assist 8.4�� 11.8 –28.6 39.1 72.1 –45.7 4.7 6.1 –24.0Air 13.9�� 16.8 –17.2 134.1 708.2 –81.1 9.6 42.1 –77.2Other V�� S S V S S V S SNot reported 1.6�� N N 14.9 N N 9.2 N NNot applicable10 436.9�� N N 4 210.4 N N 9.6 N N

FUEL TYPE AND ENGINE SIZE

Fuel type:Gasoline 409.4�� 367.2 11.5 3 890.0 3 434.4 13.3 9.5 9.4 1.6Diesel 42.3�� 44.7 –5.3 540.9 1 251.9 –56.8 12.8 28.0 –54.4Natural gas V�� N N V N N V N NPropane S�� N N S N N S N NAlcohol fuels V�� N N V N N V N N

Electricity V�� N N V N N V N NCombination 3.7�� N N S N N S N NOther V�� N N V N N V N NNot reported S�� N N S N N S N NNot applicable2 16.8�� N N S N N S N N

Cylinders11:4 cylinders 47.2�� 49.7 –4.9 367.9 532.4 –30.9 7.8 10.7 –27.36 cylinders 143.4�� 118.3 21.2 1 630.5 1 915.0 –14.9 11.4 16.2 –29.88 cylinders 256.4�� 216.0 18.7 2 346.9 2 090.1 12.3 9.2 9.7 –5.4Other 26.4�� 33.1 –20.4 120.3 196.4 –38.7 4.6 5.9 –23.0

Cubic inch displacement11:Gasoline fuel 409.4�� 367.2 11.5 3 890.0 3 434.4 13.3 9.5 9.4 1.6

Less than 200 69.4�� 82.5 –15.9 702.9 906.9 –22.5 10.1 11.0 –7.9200 to 299 89.0�� 50.4 76.5 1 089.9 649.6 67.8 12.2 12.9 –4.9300 to 349 68.7�� 53.7 27.9 599.9 488.2 22.9 8.7 9.1 –3.9350 to 399 124.4�� 111.0 12.0 1 157.9 998.4 16.0 9.3 9.0 3.5400 or more 33.6�� 29.0 16.0 285.1 238.3 19.6 8.5 8.2 3.2Not available 24.4�� 40.6 –40.0 54.2 153.1 –64.6 2.2 3.8 –40.9

Diesel fuel 42.3�� 44.7 –5.3 540.9 1 251.9 –56.8 12.8 28.0 –54.4Less than 400 16.7�� 15.2 9.8 171.7 283.4 –39.4 10.3 18.6 –44.8400 to 599 13.9�� 13.8 .8 253.8 228.4 11.1 18.3 16.6 10.2600 to 799 1.9�� 2.9 –33.5 18.9 208.3 –90.9 9.9 72.6 –86.3800 or more 4.5�� 6.0 –24.1 72.2 337.9 –78.6 16.0 56.7 –71.9Not available 5.3�� 6.9 –22.8 24.2 193.8 –87.5 4.5 28.1 –83.8

Other fuel 4.9�� 3.7 32.8 S 43.8 S S 11.9 SLess than 400 3.8�� 2.5 49.2 S S S S S S400 or more S�� S S S S S S S SNot available S�� .3 S S S S S S S

Not reported S�� N N S N N S N NNot applicable2 16.8�� N N S N N S N N

REFUELING LOCATION

Gas station 383.4�� N N 3 881.7 N N 10.1 N NTruck stop 12.8�� N N 173.9 N N 13.6 N NOwn facility (including home, farm, ranch, onsiteby mobile supplier, etc.) 42.3�� N N 247.5 N N 5.8 N N

Other company’s/contractor’s facility not open tothe public 3.4�� N N 37.4 N N 11.1 N N

Other V�� N N V N N V N NNot reported 14.8�� N N 116.3 N N 7.9 N NNot applicable2 16.8�� N N S N N S N N






Percentchange

2002 truckmiles

(millions)

1997 truckmiles



truck(thousands)


truck(thousands)

Percentchange

A B C D E F G H I

MAINTENANCE5

General maintenance performed by:None performed 13.5�� 3.8 254.7 30.8 S S 2.3 S SCompany�owned maintenance facility 35.7�� 29.7 20.5 456.9 711.3 –35.8 12.8 24.0 –46.7General repair business or private mechanic 174.9�� 138.9 25.9 2 075.8 1 702.6 21.9 11.9 12.3 –3.1Dealership service department 79.4�� 69.4 14.4 1 056.1 959.3 10.1 13.3 13.8 –3.7Leasing company S�� .2 S S 8.3 S S 51.3 S

Individual not employed/paid by anymaintenance type facility 213.2�� 239.1 –10.8 1 757.8 2 283.9 –23.0 8.2 9.6 –13.7

Other V�� 8.7 N V S S V S SNot reported 13.6�� 14.8 –8.0 102.2 167.0 –38.8 7.5 11.3 –33.5Not applicable2 16.8�� N N S N N S N N

Extensive repairs performed by:None performed 372.3�� 23.0 1 520.3 3 465.0 273.7 1 165.8 9.3 11.9 –21.9Company�owned maintenance facility 4.6�� 11.2 –59.3 66.6 221.3 –69.9 14.6 19.7 –26.1General repair business or private mechanic 32.0�� 63.2 –49.3 451.0 667.2 –32.4 14.1 10.6 33.3Dealership service department 19.6�� 53.5 –63.4 324.0 1 056.5 –69.3 16.5 19.8 –16.2Leasing company V�� S S V S S V S S

Component distributorship (engine,transmission, body, etc.) S�� 10.5 S 7.8 353.2 –97.8 S 33.7 S

Individual not employed/paid by any repair typefacility 20.3�� 54.7 –62.8 187.1 399.8 –53.2 9.2 7.3 25.8

Other V�� 2.5 N V 15.4 N V 6.1 NNot reported S�� 209.9 S S 2 076.1 S S 9.9 SNot applicable2 16.8�� N N S N N S N N

TRUCK TYPE AND AXLEARRANGEMENT

Single�unit trucks and truck�tractors withouttrailer 451.9�� 395.6 14.2 4 267.4 3 905.7 9.3 9.4 9.9 –4.32 axles 445.7�� 389.6 14.4 4 230.0 3 858.1 9.6 9.5 9.9 –4.23 axles 5.4�� 5.5 –2.0 27.5 40.4 –31.9 5.1 7.4 –30.54 axles .8�� .6 38.2 9.0 7.2 25.4 11.3 12.5 –9.25 axles or more .1�� N N .7 N N 10.7 N NNot reported S�� V S S V S S V S

Combinations 21.6�� 21.6 .1 198.2 828.2 –76.1 9.2 38.4 –76.1Single�unit trucks with trailer 17.1�� 11.5 49.0 127.9 162.9 –21.5 7.5 14.2 –47.3

3 axles 5.6�� S S S S S S S S4 axles 9.5�� 10.3 –7.3 64.7 128.4 –49.6 6.8 12.5 –45.65 axles or more 1.1�� 1.2 –8.1 13.8 33.9 –59.3 12.8 29.0 –55.7Not reported S�� N N S N N S N N

Truck�tractors with single trailer 4.0�� 8.8 –54.5 53.3 576.3 –90.8 13.3 65.3 –79.73 axles .1�� .4 –73.8 S 7.4 S S 19.9 S4 axles .2�� .5 –52.8 1.2 19.8 –94.2 4.8 38.6 –87.75 axles or more 3.4�� 7.9 –56.7 48.8 549.1 –91.1 14.2 69.2 –79.5Not reported .2�� N N 2.0 N N 8.3 N N

Truck�tractors with double trailers .4�� 1.2 –64.8 17.1 89.0 –80.8 39.3 72.2 –45.55 axles V�� S S V S S V S S6 axles V�� .2 N V S S V S S7 axles .2�� .5 –70.5 5.3 39.9 –86.7 34.4 76.3 –55.08 axles or more .3�� .5 –49.2 11.7 42.8 –72.6 44.2 81.8 –46.0Not reported S�� N N S N N S N N

Truck�tractors with triple trailers V�� V N V V N V V N7 axles V�� V N V V N V V N8 axles V�� V N V V N V V N9 axles V�� V N V V N V V N10 axles or more V�� V N V V N V V NNot reported V�� N N V N N V N N

Driving axles:1 173.8�� 188.3 –7.7 1 523.2 1 749.6 –12.9 8.8 9.3 –5.62 299.5�� 228.6 31.0 2 940.7 2 972.8 –1.1 9.8 13.0 –24.53 or more .1�� .3 –50.6 1.3 11.5 –89.0 10.2 45.9 –77.7Not reported .1�� V N .5 V N 4.2 V N

Total liftable axles and locations12:None 34.9�� 15.7 122.7 230.2 283.3 –18.8 6.6 18.1 –63.51 1.4�� 1.5 –1.9 23.4 48.4 –51.7 16.2 32.8 –50.7

Forward of the drive axle 1.1�� N N 17.5 N N 15.9 N NBelow the chassis .1�� N N S N N S N NBeyond the chassis .1�� N N .9 N N 10.7 N NNot reported .2�� N N 3.6 N N 21.6 N N

2 or more .1�� .2 –62.8 1.0 6.2 –83.7 12.2 28.0 –56.2Forward of the drive axle .1�� N N 1.0 N N 12.2 N NBelow the chassis .1�� N N S N N S N NBeyond the chassis .1�� N N S N N S N NNot reported V�� N N V N N V N N

Not reported .1�� N N .6 N N 6.6 N NNot applicable10 436.9�� N N 4 210.4 N N 9.6 N N

Total liftable axles and number of braking axles:None 34.9�� 15.7 122.7 230.2 283.3 –18.8 6.6 18.1 –63.51 1.4�� 1.5 –1.9 23.4 48.4 –51.7 16.2 32.8 –50.7

0 braking .2�� N N 3.0 N N 12.2 N N1 braking 1.2�� N N 19.6 N N 16.7 N NNot reported S�� N N S N N S N N

2 or more .1�� .2 –62.8 1.0 6.2 –83.7 12.2 28.0 –56.20 braking V�� N N V N N V N N1 braking V�� N N V N N V N N2 or more braking .1�� N N 1.0 N N 12.2 N NNot reported V�� N N V N N V N N

Not reported .1�� N N .6 N N 6.6 N NNot applicable10 436.9�� N N 4 210.4 N N 9.6 N N






Percentchange

2002 truckmiles

(millions)

1997 truckmiles



truck(thousands)


truck(thousands)

Percentchange

A B C D E F G H I

CAB TYPE

Conventional cab 32.8�� 36.1 –9.2 221.2 769.5 –71.3 6.7 21.3 –68.3With sleeper 1.8�� N N 27.1 N N 15.2 N NWithout sleeper 30.9�� N N 193.1 N N 6.3 N NNot reported .1�� N N 1.0 N N 6.9 N N

Cab over engine 3.6�� 3.5 3.8 33.3 43.6 –23.5 9.2 12.5 –26.4With sleeper .7�� N N 2.8 N N 3.8 N NWithout sleeper 2.9�� N N 30.5 N N 10.7 N NNot reported S�� N N S N N S N N

Cab forward of engine .1�� .9 –93.5 S 7.8 S S 9.1 SCab beside engine S�� S S S S S S S SNot reported S�� N N S N N S N NNot applicable10 436.9�� N N 4 210.4 N N 9.6 N N


1Comparability of estimates may vary across survey years due to changes in category definitions.2Vehicles not in use. When the respondent had partial�year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent.3Truck�tractors not in use.4Lessees or lessors of pickups, minivans, other light vans, and sport utilities.5Detail lines do not add to total because items were not applicable or multiple responses were possible.6Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are private, rental, or used for personal transportation; and vehicles not in use.7Distributed miles data are available in Table 8.8Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal transportation; and vehicles not in use.9Pickups, minivans, other light vans, and sport utilites, in the Equipment Type section, were only required to report for aerial work platform/bucket, air bag(s), air�conditioning, antilock brake

system, computerized drive train control unit, front�wheel drive, mounting bar for snowplow, radial tires, toolbox, trip recorder, vehicle control aids for handicapped drivers, wheelchair lift, and winch.10Pickups, minivans, other light vans, and sport utilities.11Data were derived from administrative records.12Detail lines do not add to the subtotal line because items were not applicable or multiple responses were possible. When 2 or 3 liftable axles were indicated, respondents properly reported

multiple responses, therefore detail lines will be significantly greater than the corresponding subtotal line.

Note: Use caution when assessing the true increase or decrease in any particular data line. Large changes in the "not reported" or "not applicable" estimates should be taken into account.

Note: Table 2b provides estimated measures of sampling variability. The Introduction gives information on confidentiality protection, sampling error, nonsampling error, sample design, anddefinitions. Links to this information on the Internet may be found at www.census.gov/svsd/www/02vehinv.html.


Table 2b. Trucks, Truck Miles, and Average Annual Miles for All Trucks�Measures of SamplingVariability: 2002 and 1997

[Estimates are shown as percents and are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Columns A, B, D, E, G, H show estimated coefficients of variation. Columns C, F,and I show estimated standard errors]

Vehicular and operational characteristics2002

trucks1997

trucksPercentchange

2002 truckmiles

1997 truckmiles

Percentchange


truck


truckPercentchange

A B C D E F G H I

Total .6�� 1.6 1.9 4.7 3.4 5.5 4.6 3.1 4.6

BUSINESS

For�hire transportation or warehousing 41.0�� 10.6 15.0 S 7.7 S S 5.0 SVehicle leasing or rental S�� S S S S S S S SAgriculture, forestry, fishing, or hunting 10.0�� 7.6 9.8 15.0 12.5 9.6 9.6 9.2 8.4Mining 20.6�� 35.5 5.8 29.5 40.2 5.4 24.0 25.9 27.0Utilities 28.8�� 33.7 87.7 34.6 41.4 76.8 15.8 11.3 14.0

Construction 16.1�� 15.5 18.0 23.8 19.5 22.6 15.0 10.4 16.6Manufacturing S�� S S S S S S S SWholesale trade 46.0�� 29.6 36.7 S 32.0 S S 17.5 SRetail trade 26.8�� 21.7 34.8 30.6 21.7 36.1 15.4 10.3 17.6Information services S�� N N S N N S N N


Arts, entertainment, or recreation services S�� N N S N N S N NAccommodation or food services S�� N N S N N S N NOther services 28.9�� N N 32.9 N N 14.3 N NPersonal transportation 2.6�� 3.2 5.1 6.3 5.3 10.2 5.7 4.2 7.1Not reported 43.9�� N N S N S S N SNot applicable1 21.6�� 28.2 93.1 S S S S S S

BODY TYPE

Single�unit trucks .7�� 1.6 2.0 4.8 3.9 6.7 4.7 3.5 5.5Pickup .9�� 2.0 2.4 5.4 5.1 7.1 5.4 4.3 6.0Minivan 15.1�� 13.0 23.5 24.6 16.0 33.4 19.4 9.3 20.8Other light vans 18.5�� 18.3 38.8 31.5 32.3 107.6 25.5 26.6 59.0Sport utility 6.1�� 8.2 13.7 12.3 11.6 22.2 10.6 9.6 14.1Armored S�� N N S N N S N N

Beverage S�� 40.1 S S S S S S SConcrete mixer 16.5�� 17.1 19.0 22.3 20.5 19.0 15.0 11.4 14.8Concrete pumper S�� N N S N N S N NCrane S�� 35.3 S S 46.7 S S 45.0 SCurtainside S�� N N S N N S N N

Dump 6.3�� 9.6 19.4 10.4 12.7 17.2 9.3 11.6 9.2Flatbed, stake, or platform 5.7�� 8.3 7.7 11.8 14.8 15.0 10.4 11.3 15.9Low boy S�� S S S S S S S SPole, logging, pulpwood, or pipe 23.9�� 27.2 24.4 30.4 30.0 27.3 18.8 25.0 29.8Service, utility 14.1�� 26.1 75.3 19.7 31.3 167.7 13.7 20.3 43.8

Service, other 23.2�� 21.2 20.3 32.9 29.0 17.1 24.1 19.7 18.8Street sweeper S�� N N S N N S N NTank, dry bulk 30.5�� S S 32.3 S S 25.4 S STank, liquids or gases 14.2�� 16.7 26.1 23.7 23.1 18.3 18.1 19.6 12.4Tow/Wrecker 25.1�� 33.0 54.7 40.2 45.7 68.3 33.2 44.0 46.9

Trash, garbage, or recycling 24.0�� 27.7 27.2 27.8 33.1 93.3 19.0 29.4 101.8Vacuum 47.1�� N N S N N S N NVan, basic enclosed 16.0�� 17.9 23.2 20.6 23.8 12.6 16.7 19.3 10.6Van, insulated nonrefrigerated S�� N S S N S S N SVan, insulated refrigerated 31.5�� 40.1 58.7 38.3 S S 27.5 S S

Van, open top 6.9�� 6.6 7.3 11.2 10.9 8.1 9.5 9.4 9.1Van, step, walk�in, or multistop 19.6�� 31.9 72.7 26.2 38.5 160.7 17.5 22.0 49.9Van, other 32.7�� N N S N N S N NOther N�� N N N N N N N N

Truck�tractors 4.1�� 3.8 2.7 8.2 4.7 1.0 7.6 3.4 1.8Automobile carrier N�� N N N N N N N NBeverage S�� S S S S S S S SCurtainside N�� N N N N N N N NDump 12.2�� 14.2 18.4 17.9 18.3 7.3 13.1 11.7 5.1Flatbed, stake, or platform 11.8�� 8.5 4.5 21.2 9.5 1.6 17.6 7.0 4.1

Livestock 24.3�� 19.2 20.4 38.2 27.8 8.0 34.0 20.1 10.2Low boy 15.4�� 14.5 14.1 24.2 18.7 4.3 18.7 11.9 4.7Mobile home toter S�� N N S N N S N NOpen top 10.0�� 16.2 16.9 20.8 26.1 7.0 18.3 16.0 5.7Pole, logging, pulpwood, or pipe 24.7�� 18.5 13.3 27.6 20.0 13.2 12.4 7.6 13.1

Tank, dry bulk 30.2�� S S 42.5 S S 29.9 S STank, liquids or gases 30.2�� 26.8 24.1 38.7 30.4 13.8 24.2 14.5 13.3Van, basic enclosed 21.7�� 13.1 5.7 33.4 13.7 1.7 25.3 8.6 5.8Van, drop�frame S�� 30.6 S S 38.0 S S 22.6 SVan, insulated nonrefrigerated N�� S S N S S N S S

Van, insulated refrigerated S�� 13.4 S S 12.2 S S 5.1 SOther N�� N N N N N N N NNot applicable2 26.3�� N N N N N N N N

ANNUAL MILES

Less than 5,000 5.7�� 5.3 9.7 8.0 7.1 11.6 5.4 4.5 6.15,000 to 9,999 8.0�� 8.0 12.5 8.2 8.3 13.1 2.0 1.5 2.510,000 to 19,999 6.7�� 6.4 9.5 6.9 6.7 9.6 1.6 1.4 2.120,000 to 29,999 13.1�� 11.6 20.5 13.2 11.7 21.3 1.9 1.4 2.430,000 to 49,999 29.6�� 20.3 26.3 29.9 20.5 26.7 4.4 3.6 5.7

50,000 to 74,999 48.1�� 29.5 44.5 47.1 28.6 40.5 3.5 4.1 5.075,000 or more S�� 12.8 S S 11.5 S S 2.2 SNot applicable1 21.6�� 31.4 126.2 S N S S N S



Table 2b. Trucks, Truck Miles, and Average Annual Miles for All Trucks�Measures of SamplingVariability: 2002 and 1997�Con.



trucks1997

trucksPercentchange

2002 truckmiles

1997 truckmiles

Percentchange


truck


truckPercentchange

A B C D E F G H I


Off�the�road 18.0�� 11.6 13.8 29.7 20.1 15.2 22.9 15.6 18.150 miles or less 3.1�� 3.4 5.3 5.5 5.0 8.6 4.5 3.6 5.851 to 100 miles 12.5�� 10.8 14.5 21.0 13.6 22.0 16.9 8.3 18.8101 to 200 miles 18.6�� 16.7 30.9 26.0 19.6 27.0 18.7 13.9 15.6201 to 500 miles 33.4�� 15.1 11.5 39.0 18.5 8.8 20.8 13.4 16.1

501 miles or more 22.8�� 15.6 24.5 31.2 8.6 12.2 20.9 11.6 10.2Not reported 15.1�� 31.4 226.4 31.7 N N 27.4 N NNot applicable1 21.6�� N N S N N S N N


Operated in Canada N�� N N N N N N N NOperated in Mexico N�� N N N N N N N NOperated within the home base state 1.6�� N N 5.1 N N 4.8 N NOperated in states other than the home basestate 23.7�� N N 32.9 N N 22.7 N N


MONTHS OPERATED

12 3.3�� N N 6.1 N N 5.1 N N7 to 11 10.9�� N N 13.4 N N 8.0 N N2 to 6 8.9�� N N 15.1 N N 12.0 N N1 or less 15.3�� N N 18.2 N N 15.0 N NVehicle not used 21.6�� N N S N N S N N

VEHICLE SIZE

Light .9�� 1.8 2.4 5.0 4.2 7.1 4.9 3.7 5.8Medium 17.7�� 15.7 26.5 28.3 25.9 40.7 18.6 15.8 23.1Light�heavy 5.3�� 8.2 11.2 14.2 19.9 22.7 13.2 15.6 16.5Heavy�heavy 2.6�� 2.8 3.2 5.4 4.1 1.4 5.2 4.0 1.6


Less than 6,001 3.3�� 1.9 3.4 7.5 4.5 7.3 6.8 4.0 7.46,001 to 8,500 7.6�� N N 10.3 N N 6.7 N N8,501 to 10,000 15.8�� N N 21.2 N N 13.8 N N10,001 to 14,000 24.6�� 25.4 62.7 37.8 42.2 93.6 25.4 25.9 33.914,001 to 16,000 33.6�� 26.8 20.8 S 39.7 S S 21.8 S

16,001 to 19,500 35.0�� 15.8 50.2 37.4 30.2 65.1 14.3 25.2 30.119,501 to 26,000 5.3�� 8.2 11.2 14.2 19.9 22.7 13.2 15.6 16.526,001 to 33,000 9.1�� 10.4 14.7 19.0 17.6 23.2 16.7 15.3 19.033,001 to 40,000 12.7�� 13.3 16.6 25.2 21.8 14.7 22.4 17.9 13.940,001 to 50,000 5.5�� 7.6 10.2 9.4 14.0 9.8 8.1 13.1 8.2

50,001 to 60,000 8.0�� 11.1 19.7 12.6 18.4 10.2 9.7 15.0 5.760,001 to 80,000 5.4�� 4.3 3.3 10.2 5.6 1.0 8.8 3.7 1.780,001 to 100,000 10.7�� 17.5 18.9 16.0 24.6 9.6 11.9 11.3 5.8100,001 to 130,000 14.2�� 11.9 9.8 18.8 13.9 6.2 12.3 7.3 7.2130,001 or more S�� S S S S S S S S

TOTAL LENGTH (FEET)

Less than 20.0 2.4�� 1.6 2.7 5.9 4.0 5.9 5.4 3.7 5.920.0 to 27.9 9.3�� 4.6 43.2 17.2 10.9 164.1 13.6 9.0 31.528.0 to 35.9 15.8�� 29.1 72.0 23.7 38.6 101.5 16.5 13.7 22.036.0 to 40.9 21.4�� 39.5 343.6 31.7 47.6 328.6 23.2 27.1 26.841.0 to 44.9 39.6�� 22.0 293.6 S 27.0 S S 21.8 S

45.0 to 49.9 16.4�� 20.4 43.1 20.1 26.4 16.6 14.7 18.7 7.250.0 to 54.9 12.7�� 18.3 36.7 19.9 23.4 19.3 16.9 18.2 9.555.0 to 59.9 10.5�� 11.3 11.9 18.7 15.9 7.2 15.5 12.1 7.560.0 to 64.9 10.1�� 9.6 9.8 15.5 12.0 3.6 12.5 8.2 3.965.0 to 69.9 13.2�� 9.6 4.6 22.1 10.3 1.0 17.8 4.9 2.8

70.0 to 74.9 23.0�� 12.8 3.8 32.7 12.1 1.1 23.2 5.1 5.075.0 to 79.9 25.5�� N N 34.6 N N 23.4 N N80.0 or more 18.2�� N N 25.3 N N 17.5 N N

MILES PER GALLON

Less than 5 6.1�� 10.5 9.3 9.6 12.6 4.8 8.8 8.9 5.05 to 6.9 4.8�� 5.2 4.2 7.8 5.3 1.3 7.4 6.2 2.27 to 8.9 6.8�� 14.9 10.5 14.1 22.7 15.9 12.4 16.4 19.29 to 10.9 11.7�� 9.7 15.5 16.6 17.3 24.0 11.8 14.3 18.111 to 12.9 11.9�� 9.8 11.3 17.2 14.2 13.0 12.6 8.0 11.913 to 14.9 12.8�� 9.9 14.9 16.3 14.0 19.8 10.2 9.8 14.315 or more 4.1�� 4.3 7.1 7.6 6.0 11.3 6.4 4.7 7.7

15 to 20.9 5.3�� 5.6 9.5 8.7 7.2 12.8 6.9 5.2 8.021 to 24.9 15.2�� 11.9 17.9 25.1 15.5 33.4 20.0 10.0 27.325 or more 21.4�� 22.6 50.9 28.8 36.8 75.6 19.4 29.0 34.5

Not reported 12.8�� 12.2 124.3 21.6 12.3 112.2 16.8 15.4 14.6Not applicable1 21.6�� N N S N N S N N






trucks1997

trucksPercentchange

2002 truckmiles

1997 truckmiles

Percentchange


truck


truckPercentchange

A B C D E F G H I

MODEL YEAR

2003 N�� N N N N N N N N2002 S�� N N S N N S N N2001 23.0�� N N 25.0 N N 11.0 N N2000 17.0�� N N 20.5 N N 11.8 N N1999 17.3�� N N 19.3 N N 8.8 N N

1998 20.0�� S S 22.4 S S 10.3 S S1997 20.7�� 16.9 27.3 27.4 15.7 29.0 17.9 8.1 17.71996 20.6�� 18.0 32.3 30.1 17.9 37.6 21.9 10.1 21.91995 17.9�� 15.7 28.0 21.6 15.3 20.0 12.2 8.6 9.61994 16.6�� 20.1 24.1 30.2 17.7 23.3 25.2 13.1 20.51993 18.7�� 16.5 29.0 20.9 16.6 20.2 9.6 9.5 8.8Pre�1993 3.8�� 2.4 3.8 7.5 4.8 4.7 6.4 4.0 4.7

VEHICLE ACQUISITION

New 6.7�� 6.6 9.7 9.3 7.4 8.9 6.5 5.3 6.1Used 2.9�� 2.8 4.8 7.1 5.1 9.8 6.4 4.1 7.3Not reported 22.7�� 20.3 48.3 29.8 11.8 22.4 18.1 13.3 9.9



Vehicle only 20.7�� N N 22.7 N N 9.7 N NVehicle with driver N�� N N N N N N N NNot reported S�� N N S N N S N NNot applicable3 37.5�� N N 39.3 N N 11.4 N N

Lessor S�� N N S N N S N NVehicle only 33.9�� N N 39.2 N N 19.5 N NVehicle with driver 48.0�� N N S N N S N NNot reported N�� N N N N N N N NNot applicable3 S�� N N S N N S N N

Not reported S�� N N S N N S N NNot leased 3.9�� N N 8.1 N N 7.0 N NNot reported 4.7�� N N 7.8 N N 6.1 N N


1 to 11 months 48.0�� N N S N N S N N12 months or more 17.9�� N N 21.0 N N 10.9 N NNot reported S�� N N S N N S N NNot applicable3 35.1�� N N 36.8 N N 11.0 N N

Provisions of lease:Financing only 19.8�� N N 21.9 N N 9.7 N NFull maintenance 31.8�� N N 44.5 N N 21.9 N NPayment of taxes 30.3�� N N 41.0 N N 27.5 N NObtaining licenses and permits 31.0�� N N 37.3 N N 22.9 N NRecordkeeping 33.5�� N N 42.6 N N 26.8 N NFuel contract 33.9�� N N S N N S N N


Private 6.7�� N N 10.4 N N 7.0 N NMotor carrier 34.7�� N N S N N S N NOwner operator 42.3�� N N 21.2 N N 26.6 N NRental S�� N N S N N S N NPersonal transportation 2.6�� N N 6.3 N N 5.7 N NNot applicable1 21.6�� N N S N N S N N


Contract 15.1�� N N 17.4 N N 13.5 N NCommon 12.8�� N N 16.9 N N 12.4 N NNot reported 22.6�� N N 28.8 N N 20.9 N NNot applicable4 .7�� N N 4.7 N N 4.7 N N

Type of service:Truckload 10.3�� 6.6 5.2 12.5 6.7 1.5 10.6 3.4 2.8Less�than truckload 21.5�� 14.1 17.9 28.5 14.3 5.6 18.1 10.2 5.3Not reported 23.1�� N N 28.8 N N 21.8 N NNot applicable4 .7�� N N 4.7 N N 4.7 N N

Source of hauls:Shippers or receivers 12.3�� N N 14.5 N N 10.2 N NBrokers S�� N N S N N S N NCentralized markets or exchanges S�� N N S N N S N NOther N�� N N N N N N N NNot reported 14.0�� N N 17.5 N N 14.5 N NNot applicable4 .7�� N N 4.7 N N 4.7 N N


Carrying hazardous materials 16.7�� 14.6 15.2 21.1 16.0 7.6 15.2 14.1 8.7Not carrying hazardous materials 1.6�� 2.1 2.3 4.8 4.4 2.0 4.7 4.0 2.2Not reported 11.4�� 8.0 5.4 18.1 12.2 3.2 14.8 11.7 7.1Not applicable6 .7�� N N 5.0 N N 4.9 N N






trucks1997

trucksPercentchange

2002 truckmiles

1997 truckmiles

Percentchange


truck


truckPercentchange

A B C D E F G H I

EQUIPMENT TYPE 7

Aerial work platform/bucket 20.9�� N N 28.4 N N 19.4 N NAir bag(s) (safety device only) 5.9�� 8.8 28.0 8.8 9.1 27.5 6.7 5.0 6.9Air compressor (except air brakes) 12.3�� N N 17.8 N N 15.3 N NAir�conditioning 3.3�� 4.1 6.9 6.1 4.8 8.2 5.1 3.7 5.1Air springs 7.5�� N N 12.1 N N 10.6 N N

Antilock brake system 5.0�� 7.1 13.8 7.8 7.8 15.0 6.0 5.2 6.8Collision warning system 36.7�� N N 39.2 N N 29.8 N NComputerized drive train control unit 13.2�� N N 15.6 N N 8.4 N NCrane 21.4�� N N 29.8 N N 24.5 N NElectronic vehicle identification device S�� 17.2 S S 15.2 S S 6.3 S

Engine retarder/brake 3.6�� 4.3 4.2 7.5 5.9 1.7 6.8 4.0 1.8Front�wheel drive 3.3�� 8.2 35.5 5.9 10.8 43.7 4.9 7.1 7.6Hoist 3.9�� N N 9.5 N N 8.9 N NIdle�reducing technology (portable auxiliary pack,electrification, etc.) 32.1�� N N 38.1 N N 32.9 N N

Internet access N�� N N N N N N N N

Lift gate 15.5�� N N 26.1 N N 21.4 N NMounting bar for snowplow 38.8�� N N 46.7 N N 25.5 N NNavigational system N�� 25.5 N N 25.3 N N 19.1 NPower take�off 3.6�� N N 7.4 N N 6.9 N NRadial tires 2.9�� 2.6 3.7 5.9 3.9 5.4 5.1 3.2 4.9

Reflective material in addition to those requiredby law 9.3�� 7.5 5.6 14.1 9.7 2.2 11.4 7.8 3.8

Road speed governor 7.2�� 5.8 4.8 11.5 7.0 1.8 9.8 6.1 3.0Toolbox 9.6�� N N 13.6 N N 9.6 N NTrip recorder or on�board computer withcommunication capabilities 31.8�� N N 34.0 N N 16.8 N N


Vehicle control aids for handicapped drivers N�� N N N N N N N NWheelchair lift S�� N S S N S S N SWinch 25.6�� N N 38.8 N N 27.7 N N

Transmission type:Automatic 3.4�� N N 6.7 N N 5.9 N NManual 4.7�� N N 7.9 N N 6.4 N NSemiautomated manual 33.2�� N N S N N S N NAutomated manual S�� N N S N N S N NNot reported 29.7�� N N 37.4 N N 19.8 N N

Braking system:Hydraulic (standard) 4.3�� 5.4 7.4 11.4 11.7 23.2 10.5 10.4 19.7Hydraulic with power assist 6.0�� 6.4 6.3 12.0 13.4 9.8 10.4 10.5 11.2Air 2.8�� 2.8 3.2 5.6 4.4 1.3 5.3 3.9 1.5Other N�� S S N S S N S SNot reported 13.9�� N N 19.7 N N 15.4 N NNot applicable8 .7�� N N 5.0 N N 4.9 N N


Fuel type:Gasoline 1.6�� 1.9 2.8 5.3 4.0 7.5 5.0 3.5 6.3Diesel 11.0�� 10.7 14.5 14.8 8.6 7.4 9.1 7.0 5.2Natural gas N�� N N N N N N N NPropane S�� N N S N N S N NAlcohol fuels N�� N N N N N N N N

Electricity N�� N N N N N N N NCombination 48.1�� N N S N N S N NOther N�� N N N N N N N NNot reported S�� N N S N N S N NNot applicable1 21.6�� N N S N N S N N

Cylinders9:4 cylinders 12.8�� 10.2 15.6 17.6 14.3 15.7 12.3 10.1 11.66 cylinders 6.1�� 5.4 9.8 10.9 5.3 10.3 9.5 3.9 7.28 cylinders 3.8�� 4.2 6.7 6.7 6.9 10.8 5.4 5.4 7.2Other 13.0�� 12.5 14.4 26.6 25.3 22.5 19.9 16.6 19.9

Cubic inch displacement9:Gasoline fuel 1.6�� 1.9 2.8 5.3 4.0 7.5 5.0 3.5 6.3

Less than 200 10.4�� 7.5 10.8 17.9 10.4 16.0 14.5 7.1 14.9200 to 299 8.3�� 9.4 22.2 13.7 11.1 29.6 11.2 6.0 12.0300 to 349 10.4�� 9.7 18.2 13.4 13.0 22.9 8.2 8.5 11.4350 to 399 7.0�� 7.1 11.2 10.4 9.6 16.4 7.6 6.7 10.5400 or more 15.0�� 13.2 23.2 23.5 21.4 38.1 18.1 16.7 25.4Not available 14.0�� 11.8 11.0 27.0 33.0 15.1 21.2 24.7 19.2

Diesel fuel 11.0�� 10.7 14.5 14.8 8.6 7.4 9.1 7.0 5.2Less than 400 21.4�� 26.7 37.6 26.7 32.1 25.3 17.1 21.0 14.9400 to 599 21.6�� 18.7 28.8 26.2 22.3 38.2 11.5 11.2 17.7600 to 799 9.6�� 10.8 9.6 12.6 11.7 1.6 10.4 6.7 1.7800 or more 4.2�� 4.4 4.7 8.2 6.1 2.2 7.1 4.4 2.3Not available 17.1�� 5.1 13.8 11.2 8.6 1.8 19.1 7.9 3.3

Other fuel 40.7�� 36.5 72.6 S 49.1 S S 32.1 SLess than 400 47.5�� 47.2 99.9 S S S S S S400 or more S�� S S S S S S S SNot available S�� 43.2 S S S S S S S







trucks1997

trucksPercentchange

2002 truckmiles

1997 truckmiles

Percentchange


truck


truckPercentchange

A B C D E F G H I

REFUELING LOCATION

Gas station 2.0�� N N 5.5 N N 5.1 N NTruck stop 21.7�� N N 25.9 N N 14.1 N NOwn facility (including home, farm, ranch, onsiteby mobile supplier, etc.) 11.4�� N N 17.5 N N 12.3 N N


Other N�� N N N N N N N NNot reported 22.9�� N N 30.1 N N 18.9 N NNot applicable1 21.6�� N N S N N S N N

MAINTENANCE

General maintenance performed by:None performed 24.0�� 38.7 161.4 40.3 S S 32.6 S SCompany�owned maintenance facility 13.1�� 10.7 20.4 17.6 8.7 12.6 10.8 7.8 7.1General repair business or private mechanic 5.5�� 6.4 10.6 9.6 7.5 14.9 8.0 5.1 9.2Dealership service department 9.5�� 10.1 15.8 11.6 9.9 16.8 6.7 6.2 8.8Leasing company S�� 32.3 S S 36.9 S S 17.6 S

Individual not employed/paid by anymaintenance type facility 4.6�� 3.3 5.1 7.7 6.0 7.5 6.0 4.8 6.6

Other N�� 41.7 N N S S N S SNot reported 24.0�� 18.0 27.6 32.8 19.8 23.4 22.2 14.8 17.8Not applicable1 21.6�� N N S N N S N N

Extensive repairs performed by:None performed 2.3�� 15.3 250.9 5.9 19.2 254.1 5.4 11.4 9.8Company�owned maintenance facility 38.9�� 18.0 17.4 47.7 20.3 15.6 25.9 13.8 21.7General repair business or private mechanic 15.5�� 8.5 9.0 20.2 10.4 15.4 12.6 6.9 19.2Dealership service department 20.5�� 13.2 8.9 24.2 11.1 8.2 13.2 8.9 13.3Leasing company N�� S S N S S N S S

Component distributorship (engine,transmission, body, etc.) S�� 20.0 S 35.8 10.7 .8 S 13.9 S

Individual not employed/paid by any repair typefacility 19.7�� 9.2 8.1 25.4 14.6 13.7 15.7 11.1 24.1

Other N�� 47.8 N N 38.1 N N 20.2 NNot reported S�� 3.9 S S 6.2 S S 4.6 SNot applicable1 21.6�� N N S N N S N N


Single�unit trucks and truck�tractors withouttrailer 1.0�� 1.5 2.1 4.9 3.9 6.9 4.8 3.6 5.72 axles 1.0�� 1.6 2.2 4.9 4.0 7.0 4.8 3.6 5.83 axles 3.8�� 6.1 7.0 7.7 9.7 8.5 6.7 8.7 7.64 axles 12.4�� 16.9 29.0 18.8 23.2 37.5 14.2 15.8 19.35 axles or more 42.9�� N N 48.3 N N 22.3 N NNot reported S�� N S S N S S N S

Combinations 16.4�� 17.3 23.9 18.3 7.6 4.7 13.6 11.5 4.2Single�unit trucks with trailer 20.7�� 32.2 57.1 27.9 34.0 34.6 19.8 11.1 12.0

3 axles 38.6�� S S S S S S S S4 axles 28.7�� 36.1 42.7 38.2 42.9 28.9 25.5 14.4 15.95 axles or more 13.3�� 11.7 16.3 19.2 17.2 10.5 17.2 12.6 9.4Not reported S�� N N S N N S N N

Truck�tractors with single trailer 4.4�� 4.3 2.8 8.7 5.3 .9 7.6 3.7 1.73 axles 36.2�� 28.6 12.1 S 33.3 S S 14.0 S4 axles 27.8�� 26.8 18.2 43.4 30.6 3.1 38.1 28.0 5.85 axles or more 4.9�� 4.4 2.8 9.3 5.5 1.0 7.9 3.5 1.8Not reported 23.1�� N N 34.8 N N 26.0 N N

Truck�tractors with double trailers 16.8�� 12.1 7.3 22.6 13.8 5.1 15.0 8.9 9.55 axles N�� S S N S S N S S6 axles N�� 47.6 N N S S N S S7 axles 28.7�� 17.8 10.0 39.4 20.9 5.9 26.9 11.0 13.18 axles or more 21.8�� 17.8 14.3 27.9 20.5 9.5 17.4 10.2 10.9Not reported S�� N N S N N S N N

Truck�tractors with triple trailers N�� N N N N N N N N7 axles N�� N N N N N N N N8 axles N�� N N N N N N N N9 axles N�� N N N N N N N N10 axles or more N�� N N N N N N N NNot reported N�� N N N N N N N N

Driving axles:1 5.4�� 4.3 6.4 11.7 7.9 12.3 10.2 6.2 11.32 3.2�� 4.0 6.7 5.7 4.6 7.2 4.7 3.4 4.33 or more 31.8�� 25.8 20.2 37.0 37.6 5.8 18.9 27.1 7.4Not reported 34.0�� N N 37.8 N N 16.6 N N

Total liftable axles and locations:None 1.0�� 4.2 9.6 4.7 6.7 6.7 4.6 6.5 2.91 8.9�� 16.1 18.0 14.2 26.7 14.6 11.1 18.6 10.7

Forward of the drive axle 10.3�� N N 15.8 N N 11.9 N NBelow the chassis 36.3�� N N S N N S N NBeyond the chassis 39.1�� N N 45.5 N N 23.2 N NNot reported 27.7�� N N 48.3 N N 39.6 N N

2 or more 39.1�� 35.8 19.7 43.8 42.6 10.0 19.7 39.7 19.4Forward of the drive axle 39.1�� N N 43.8 N N 19.7 N NBelow the chassis 48.0�� N N S N N S N NBeyond the chassis 48.0�� N N S N N S N NNot reported N�� N N N N N N N N

Not reported 36.3�� N N 44.1 N N 25.1 N NNot applicable8 .7�� N N 5.0 N N 4.9 N N






trucks1997

trucksPercentchange

2002 truckmiles

1997 truckmiles

Percentchange


truck


truckPercentchange

A B C D E F G H I

TRUCK TYPE AND AXLEARRANGEMENT�Con.

Total liftable axles and number of braking axles:None 1.0�� 4.2 9.6 4.7 6.7 6.7 4.6 6.5 2.91 8.9�� 16.1 18.0 14.2 26.7 14.6 11.1 18.6 10.7

0 braking 22.5�� N N 35.5 N N 27.4 N N1 braking 10.0�� N N 15.8 N N 12.3 N NNot reported S�� N N S N N S N N

2 or more 39.1�� 35.8 19.7 43.8 42.6 10.0 19.7 39.7 19.40 braking N�� N N N N N N N N1 braking N�� N N N N N N N N2 or more braking 39.1�� N N 43.8 N N 19.7 N NNot reported N�� N N N N N N N N

Not reported 36.3�� N N 44.1 N N 25.1 N NNot applicable8 .7�� N N 5.0 N N 4.9 N N

CAB TYPE

Conventional cab 1.3�� 2.1 2.2 4.7 4.2 1.8 4.5 3.9 1.9With sleeper 7.5�� N N 13.2 N N 10.9 N NWithout sleeper 1.4�� N N 5.1 N N 5.0 N NNot reported 30.3�� N N 45.1 N N 33.4 N N

Cab over engine 8.0�� 9.0 12.5 15.8 14.2 16.3 13.0 12.8 13.5With sleeper 13.9�� N N 20.2 N N 15.8 N NWithout sleeper 9.6�� N N 17.2 N N 13.9 N NNot reported S�� N N S N N S N N

Cab forward of engine 48.1�� 23.2 3.5 S 43.6 S S 36.3 SCab beside engine S�� S S S S S S S SNot reported S�� N N S N N S N NNot applicable8 .7�� N N 5.0 N N 4.9 N N


1Vehicles not in use. When the respondent had partial�year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent.2Truck�tractors not in use.3Lessees or lessors of pickups, minivans, other light vans, and sport utilities.4Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are private, rental, or used for personal transportation; and vehicles not in use.5Distributed miles data are available in Table 8.6Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal transportation; and vehicles not in use.7Pickups, minivans, other light vans, and sport utilites, in the Equipment Type section, were only required to report for aerial work platform/bucket, air bag(s), air�conditioning, antilock brake

system, computerized drive train control unit, front�wheel drive, mounting bar for snowplow, radial tires, toolbox, trip recorder, vehicle control aids for handicapped drivers, wheelchair lift, and winch.8Pickups, minivans, other light vans, and sport utilities.9Data were derived from administrative records.


Table 3a. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,Minivans, Other Light Vans, and Sport Utilities: 2002 and 1997

[Estimates are based on data from the 2002 and 1997 Vehicle Inventory and Use Surveys. Because of rounding, estimates may not be additive]



Percentchange

2002 truckmiles

(millions)

1997 truckmiles



truck(thousands)


truck(thousands)

Percentchange

A B C D E F G H I

Total 36.6�� 43.4 –15.8 255.2 877.3 –70.9 7.0 20.2 –65.5

BUSINESS1

For�hire transportation or warehousing 1.4�� 5.9 –76.7 32.2 524.8 –93.9 23.3 88.8 –73.7Vehicle leasing or rental .1�� S S S S S S S SAgriculture, forestry, fishing, or hunting 18.1�� 19.7 –7.7 72.5 119.3 –39.2 4.0 6.1 –34.1Mining .6�� .5 7.8 4.3 9.7 –55.8 7.3 17.8 –59.0Utilities 1.9�� 1.0 81.4 18.9 6.7 183.2 10.1 6.5 56.1

Construction 6.5�� 6.9 –6.0 47.0 75.2 –37.5 7.2 10.8 –33.5Manufacturing .3�� .6 –48.7 2.7 4.5 –38.9 9.3 7.8 19.1Wholesale trade 1.0�� 1.8 –43.5 19.7 42.4 –53.5 19.9 24.2 –17.7Retail trade 1.9�� 2.5 –22.2 28.3 51.1 –44.6 14.8 20.8 –28.8Information services S�� N N S N N S N N

Waste management, landscaping, oradministrative/support services .9�� N N 11.2 N N 13.2 N N

Arts, entertainment, or recreation services S�� N N S N N S N NAccommodation or food services .3�� N N S N N S N NOther services .8�� N N 7.2 N N 9.2 N NPersonal transportation S�� 1.6 S S 4.0 S S 2.4 SNot reported .9�� V N 5.9 V N 6.9 V NNot applicable2 1.6�� .9 73.6 S S S S S S

BODY TYPE

Single�unit trucks 31.8�� 33.4 –4.8 184.9 212.0 –12.8 5.8 6.4 –8.3Armored S�� N N S N N S N NBeverage S�� .3 S S S S S S SConcrete mixer .4�� .6 –20.1 3.4 5.4 –37.2 7.7 9.8 –21.4Concrete pumper S�� N N S N N S N NCrane S�� .3 S S 1.7 S S 6.2 S

Curtainside S�� N N S N N S N NDump 6.5�� 3.8 69.5 24.5 23.3 4.9 3.8 6.1 –38.1Flatbed, stake, or platform 8.9�� 11.6 –23.6 45.6 57.5 –20.8 5.1 5.0 3.8Low boy S�� S S S S S S S SPole, logging, pulpwood, or pipe .2�� .3 –32.8 7.3 11.4 –36.1 32.8 34.5 –4.8

Service, utility 2.0�� .8 154.2 19.7 4.3 353.2 10.0 5.6 78.3Service, other .8�� 1.2 –35.5 5.6 14.5 –61.1 7.5 12.4 –39.8Street sweeper S�� N N S N N S N NTank, dry bulk .3�� S S .9 S S 3.4 S STank, liquids or gases 1.5�� 1.3 18.7 14.0 25.4 –44.8 9.2 19.8 –53.5

Tow/Wrecker .6�� .4 31.8 2.8 2.5 12.2 5.0 5.9 –14.9Trash, garbage, or recycling .4�� .6 –25.9 7.7 3.6 115.8 17.4 6.0 191.1Vacuum .1�� N N S N N S N NVan, basic enclosed 1.4�� 1.5 –3.2 7.0 17.4 –60.0 4.9 11.9 –58.7Van, insulated nonrefrigerated S�� V S S V S S V S

Van, insulated refrigerated .4�� .3 15.0 4.9 S S 12.7 S SVan, open top 6.4�� 8.4 –23.5 11.7 22.6 –48.2 1.8 2.7 –32.2Van, step, walk�in, or multistop 1.1�� .6 94.5 18.9 5.5 245.0 17.3 9.8 77.4Van, other .4�� N N S N N S N NOther V�� N N V N N V N N

Truck�tractors 4.8�� 10.1 –52.2 70.3 665.3 –89.4 14.6 66.2 –77.9Automobile carrier V�� V N V V N V V NBeverage S�� S S S S S S S SCurtainside V�� N N V N N V N NDump .8�� .8 –1.8 11.6 40.9 –71.7 14.5 50.4 –71.2Flatbed, stake, or platform .9�� 2.7 –68.7 11.5 170.5 –93.3 13.5 62.7 –78.5

Livestock .3�� .5 –34.2 3.5 20.4 –83.0 11.7 45.2 –74.2Low boy .5�� .8 –33.3 4.9 34.4 –85.8 9.4 44.3 –78.7Mobile home toter S�� N N S N N S N NOpen top 1.1�� 1.3 –11.0 10.9 51.8 –79.0 9.6 40.7 –76.4Pole, logging, pulpwood, or pipe .2�� .5 –56.9 10.2 26.3 –61.4 48.6 54.2 –10.4

Tank, dry bulk .1�� S S 4.7 S S 33.7 S STank, liquids or gases .1�� .2 –40.3 4.1 14.8 –72.0 29.6 62.9 –53.0Van, basic enclosed .3�� 1.2 –77.6 5.0 103.2 –95.2 18.8 87.0 –78.4Van, drop�frame S�� .2 S S 10.4 S S 57.7 SVan, insulated nonrefrigerated V�� S S V S S V S S

Van, insulated refrigerated S�� 1.6 S S 181.4 S S 115.2 SOther V�� N N V N N V N NNot applicable3 .4�� N N V N N V N N

ANNUAL MILES

Less than 5,000 21.9�� 21.6 1.5 33.3 34.6 –3.8 1.5 1.6 –5.25,000 to 9,999 5.1�� 6.3 –19.1 33.9 39.4 –14.0 6.6 6.2 6.310,000 to 19,999 4.2�� 4.6 –10.1 55.3 60.3 –8.3 13.3 13.0 2.020,000 to 29,999 2.1�� 2.1 4.6 50.3 46.9 7.2 23.4 22.8 2.630,000 to 49,999 .9�� 1.8 –48.2 34.4 67.9 –49.4 36.3 37.1 –2.3

50,000 to 74,999 .5�� 1.7 –68.5 33.0 106.4 –69.0 60.5 61.5 –1.575,000 or more .2�� 4.5 –96.3 15.0 521.8 –97.1 89.8 115.9 –22.5Not applicable2 1.6�� .8 99.9 S V S S V S



Table 3a. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,Minivans, Other Light Vans, and Sport Utilities: 2002 and 1997�Con.




Percentchange

2002 truckmiles

(millions)

1997 truckmiles



truck(thousands)


truck(thousands)

Percentchange

A B C D E F G H I


Off�the�road 4.6�� 7.8 –40.5 14.6 31.2 –53.0 3.2 4.0 –21.150 miles or less 20.8�� 21.8 –4.6 132.4 153.7 –13.9 6.4 7.1 –9.851 to 100 miles 4.0�� 5.1 –21.8 52.0 100.0 –48.0 13.0 19.6 –33.5101 to 200 miles 1.1�� 1.8 –41.5 17.6 67.9 –74.0 16.6 37.4 –55.6201 to 500 miles .8�� 2.1 –62.5 12.5 119.6 –89.5 15.8 56.6 –72.1

501 miles or more .3�� 4.0 –93.4 S 404.9 S S 101.0 SNot reported 3.4�� .8 328.3 22.9 V N 6.7 V NNot applicable2 1.6�� N N S N N S N N


Operated in Canada V�� N N V N N V N NOperated in Mexico V�� N N V N N V N NOperated within the home base state 32.3�� N N 235.0 N N 7.3 N NOperated in states other than the home basestate .5�� N N 8.6 N N 15.7 N N


MONTHS OPERATED


VEHICLE SIZE

Light 2.1�� 7.5 –71.9 16.0 33.0 –51.6 7.6 4.4 72.2Medium 7.1�� 6.5 8.8 48.0 37.2 28.8 6.8 5.7 18.5Light�heavy 10.0�� 8.7 14.9 36.9 39.8 –7.3 3.7 4.6 –19.4Heavy�heavy 17.4�� 20.8 –16.2 154.4 767.3 –79.9 8.9 37.0 –76.0


Less than 6,001 S�� 2.2 S S 9.4 S S 4.3 S6,001 to 8,500 .8�� N N 3.2 N N 4.3 N N8,501 to 10,000 1.2�� N N 12.2 N N 9.8 N N10,001 to 14,000 3.5�� 2.5 38.7 27.0 16.3 65.3 7.7 6.5 19.214,001 to 16,000 1.8�� 2.0 –7.2 9.4 8.1 15.6 5.1 4.1 24.5

16,001 to 19,500 1.7�� 2.0 –13.2 11.6 12.8 –9.3 6.7 6.4 4.519,501 to 26,000 10.0�� 8.7 14.9 36.9 39.8 –7.3 3.7 4.6 –19.426,001 to 33,000 4.3�� 4.0 6.4 26.7 29.9 –10.6 6.2 7.4 –16.033,001 to 40,000 1.7�� 1.9 –9.5 6.9 15.6 –56.0 4.0 8.3 –51.440,001 to 50,000 4.2�� 3.9 9.0 21.9 37.8 –41.9 5.2 9.7 –46.7

50,001 to 60,000 2.1�� 1.4 44.2 15.9 34.6 –54.2 7.6 24.0 –68.260,001 to 80,000 3.5�� 7.2 –52.3 42.9 509.8 –91.6 12.4 70.4 –82.380,001 to 100,000 1.0�� 1.1 –7.8 17.1 52.2 –67.2 16.8 47.2 –64.4100,001 to 130,000 .6�� 1.1 –47.0 22.7 85.2 –73.3 37.8 75.1 –49.7130,001 or more S�� S S S S S S S S

TOTAL LENGTH (FEET)

Less than 20.0 8.1�� 10.3 –21.7 42.8 55.6 –22.9 5.3 5.4 –1.620.0 to 27.9 15.8�� 17.0 –7.4 77.3 85.9 –10.1 4.9 5.0 –2.928.0 to 35.9 5.1�� 4.4 15.7 35.7 37.1 –4.0 7.0 8.4 –17.036.0 to 40.9 1.2�� 1.0 19.6 11.6 15.5 –25.3 9.8 15.6 –37.541.0 to 44.9 .5�� .7 –22.2 4.5 14.8 –69.6 8.3 21.3 –61.0

45.0 to 49.9 1.0�� .6 64.9 6.8 13.6 –50.0 6.8 22.5 –69.750.0 to 54.9 1.0�� .6 64.6 9.2 14.6 –37.2 9.0 23.6 –61.955.0 to 59.9 1.1�� 1.4 –22.9 13.9 47.4 –70.7 13.1 34.4 –62.060.0 to 64.9 1.3�� 1.8 –29.8 19.1 103.6 –81.6 15.2 57.7 –73.765.0 to 69.9 .7�� 2.5 –72.1 8.9 207.6 –95.7 13.0 84.4 –84.6

70.0 to 74.9 .2�� 1.7 –85.7 5.4 179.2 –97.0 22.7 107.5 –78.975.0 to 79.9 .2�� N N 7.2 N N 37.1 N N80.0 or more .4�� N N 12.8 N N 34.0 N N

MILES PER GALLON

Less than 5 5.6�� 6.6 –16.1 51.2 156.4 –67.3 9.2 23.6 –61.05 to 6.9 9.9�� 16.2 –38.5 71.7 537.7 –86.7 7.2 33.3 –78.37 to 8.9 6.7�� 7.2 –7.4 42.2 45.6 –7.4 6.3 6.3 V9 to 10.9 3.8�� 4.6 –17.2 27.5 30.7 –10.2 7.2 6.6 8.411 to 12.9 1.5�� 1.9 –18.6 14.4 17.1 –15.9 9.5 9.2 3.213 to 14.9 .7�� .7 4.3 11.1 3.5 215.4 15.8 5.2 202.315 or more .5�� .9 –42.6 3.3 8.4 –60.3 6.3 9.2 –30.8

15 to 20.9 .5�� .9 –42.6 3.3 8.4 –60.3 6.3 9.2 –30.821 to 24.9 V�� V N V V N V V N25 or more V�� V N V V N V V N

Not reported 6.2�� 5.3 16.2 33.7 77.9 –56.7 5.4 14.6 –62.8Not applicable2 1.6�� N N S N N S N N







Percentchange

2002 truckmiles

(millions)

1997 truckmiles



truck(thousands)


truck(thousands)

Percentchange

A B C D E F G H I

MODEL YEAR

2003 V�� N N V N N V N N2002 S�� N N S N N S N N2001 .6�� N N 14.1 N N 23.3 N N2000 1.0�� N N 22.7 N N 23.4 N N1999 .6�� N N 10.7 N N 19.0 N N

1998 .4�� S S 7.6 S S 17.6 S S1997 .6�� .8 –25.4 11.2 73.2 –84.8 18.5 90.9 –79.61996 .7�� 1.5 –49.8 14.7 83.6 –82.4 19.8 56.5 –65.01995 .6�� 1.3 –50.7 9.1 96.3 –90.5 14.2 73.7 –80.81994 .9�� 1.5 –43.2 16.5 109.8 –85.0 19.1 72.2 –73.61993 1.0�� .8 30.4 12.2 66.5 –81.6 12.1 85.6 –85.9Pre�1993 30.1�� 37.3 –19.3 135.9 431.6 –68.5 4.5 11.6 –61.0

VEHICLE ACQUISITION

New 8.6�� 11.8 –27.3 104.8 413.7 –74.7 12.2 35.1 –65.2Used 26.8�� 28.6 –6.2 143.2 271.7 –47.3 5.3 9.5 –43.8Not reported 1.2�� 3.1 –60.8 7.2 191.9 –96.2 6.0 62.8 –90.4


Leased .9�� N N 18.0 N N 19.5 N NLessee .7�� N N 14.7 N N 21.1 N N

Vehicle only .7�� N N 14.6 N N 21.3 N NVehicle with driver V�� N N V N N V N NNot reported S�� N N S N N S N N

Lessor .2�� N N 3.3 N N 19.5 N NVehicle only .1�� N N .8 N N 7.5 N NVehicle with driver .1�� N N S N N S N NNot reported V�� N N V N N V N N


Length of leasing agreement:Leased .9�� N N 18.0 N N 19.5 N N

1 to 11 months .1�� N N S N N S N N12 months or more .8�� N N 17.3 N N 21.0 N NNot reported S�� N N S N N S N N

Provisions of lease4:Financing only .7�� N N 15.4 N N 21.2 N NFull maintenance .2�� N N 3.0 N N 15.1 N NPayment of taxes .1�� N N 1.4 N N 9.9 N NObtaining licenses and permits .3�� N N 5.2 N N 18.0 N NRecordkeeping .3�� N N 4.4 N N 16.6 N NFuel contract .1�� N N S N N S N N


Private 31.5�� N N 184.7 N N 5.9 N NMotor carrier 2.0�� N N 40.5 N N 20.7 N NOwner operator 1.2�� N N 27.6 N N 22.6 N NRental .2�� N N 1.7 N N 8.3 N NPersonal transportation S�� N N S N N S N NNot applicable2 1.6�� N N S N N S N N


Contract 1.0�� N N 29.3 N N 29.6 N NCommon 1.7�� N N 31.1 N N 18.6 N NNot reported .5�� N N 7.7 N N 14.8 N NNot applicable5 33.4�� N N 187.1 N N 5.6 N N

Type of service:Truckload 1.8�� 4.3 –57.8 43.4 403.8 –89.2 23.7 92.8 –74.5Less�than truckload .8�� 1.2 –30.2 17.0 95.8 –82.3 21.0 82.9 –74.6Not reported .5�� N N 7.7 N N 14.3 N NNot applicable5 33.4�� N N 187.1 N N 5.6 N N

Source of hauls:Shippers or receivers 1.8�� N N 46.2 N N 26.1 N NBrokers S�� N N S N N S N NCentralized markets or exchanges S�� N N S N N S N NOther V�� N N V N N V N NNot reported 1.3�� N N 17.9 N N 14.1 N NNot applicable5 33.4�� N N 187.1 N N 5.6 N N


Carrying hazardous materials 1.2�� 1.8 –31.5 17.8 62.0 –71.3 14.5 34.5 –58.0Not carrying hazardous materials 31.1�� 36.1 –13.8 221.2 727.3 –69.6 7.1 20.2 –64.7Not reported 2.3�� 4.9 –52.8 13.9 86.1 –83.9 6.0 17.4 –65.8Not applicable7 1.9�� N N 2.3 N N 1.2 N N

EQUIPMENT TYPE4

Aerial work platform/bucket 1.0�� N N 5.0 N N 5.3 N NAir bag(s) (safety device only) 1.5�� 2.5 –40.2 27.3 169.2 –83.9 17.9 66.5 –73.0Air compressor (except air brakes) 1.8�� N N 20.6 N N 11.6 N NAir�conditioning 7.6�� 12.1 –36.8 122.6 650.4 –81.1 16.1 53.8 –70.2Air springs 2.3�� N N 38.2 N N 16.7 N N







Percentchange

2002 truckmiles

(millions)

1997 truckmiles



truck(thousands)


truck(thousands)

Percentchange

A B C D E F G H I

EQUIPMENT TYPE4�Con.

Antilock brake system 2.8�� 2.8 –1.3 51.6 162.0 –68.2 18.7 58.1 –67.8Collision warning system .3�� N N 6.5 N N 22.8 N NComputerized drive train control unit .4�� N N 5.7 N N 14.7 N NCrane .7�� N N 6.0 N N 9.2 N NElectronic vehicle identification device S�� 1.1 S S 129.4 S S 115.1 S

Engine retarder/brake 6.4�� 8.5 –24.7 86.1 498.3 –82.7 13.4 58.5 –77.1Front�wheel drive V�� V N V V N V V NHoist 14.4�� N N 44.6 N N 3.1 N NIdle�reducing technology (portable auxiliary pack,electrification, etc.) .3�� N N 6.2 N N 22.3 N N

Internet access V�� N N V N N V N N

Lift gate 1.5�� N N 13.7 N N 9.2 N NMounting bar for snowplow .3�� N N S N N S N NNavigational system V�� .4 N V 32.0 N V 87.2 NPower take�off 15.4�� N N 84.6 N N 5.5 N NRadial tires 18.6�� 26.3 –29.2 188.3 736.8 –74.4 10.1 28.0 –63.9

Reflective material in addition to those requiredby law 3.0�� 6.5 –53.6 32.2 254.5 –87.3 10.7 39.1 –72.7

Road speed governor 5.1�� 9.8 –48.0 58.8 436.3 –86.5 11.5 44.5 –74.1Toolbox 7.8�� N N 89.9 N N 11.5 N NTrip recorder or on�board computer withcommunication capabilities .3�� N N 9.7 N N 29.8 N N

Trip recorder or on�board computer withoutcommunication capabilities .4�� N N 12.2 N N 32.4 N N

Vehicle control aids for handicapped drivers V�� V N V V N V V NWheelchair lift V�� V N V V N V V NWinch 1.6�� N N 12.4 N N 7.6 N N

Transmission type:Automatic 4.5�� N N 45.5 N N 10.2 N NManual 30.6�� N N 198.6 N N 6.5 N NSemiautomated manual .2�� N N S N N S N NAutomated manual S�� N N S N N S N NNot reported 1.2�� N N 8.6 N N 6.9 N N

Braking system:Hydraulic (standard) 12.6�� 11.8 7.1 67.1 47.2 42.1 5.3 4.0 32.6Hydraulic with power assist 8.4�� 11.8 –28.6 39.1 72.1 –45.7 4.7 6.1 –24.0Air 13.9�� 16.8 –17.2 134.1 708.2 –81.1 9.6 42.1 –77.2Other V�� S S V S S V S SNot reported 1.6�� N N 14.9 N N 9.2 N N


Fuel type:Gasoline 18.6�� 22.2 –16.3 70.0 74.7 –6.2 3.8 3.4 12.0Diesel 16.0�� 19.7 –18.8 182.2 793.9 –77.1 11.4 40.4 –71.8Natural gas V�� N N V N N V N NPropane .3�� N N S N N S N NAlcohol fuels V�� N N V N N V N N

Electricity V�� N N V N N V N NCombination S�� N N S N N S N NOther V�� N N V N N V N NNot reported S�� N N S N N S N NNot applicable2 1.6�� N N S N N S N N

Cylinders8:4 cylinders .4�� .2 139.4 5.3 3.9 34.9 12.0 21.3 –43.76 cylinders 10.2�� 12.8 –19.9 151.7 679.4 –77.7 14.9 53.3 –72.18 cylinders 12.9�� 12.5 3.2 65.7 75.2 –12.6 5.1 6.0 –15.3Other 13.0�� 18.0 –27.7 32.5 118.8 –72.7 2.5 6.6 –62.2

Cubic inch displacement8:Gasoline fuel 18.6�� 22.2 –16.3 70.0 74.7 –6.2 3.8 3.4 12.0

Less than 200 S�� V S S V S S V S200 to 299 .2�� S S S S S S S S300 to 349 .5�� .6 –20.4 S 1.1 S S 1.8 S350 to 399 4.2�� 3.4 23.0 21.2 21.9 –3.0 5.1 6.5 –21.1400 or more 2.7�� 2.9 –5.4 21.9 17.4 25.9 8.1 6.1 33.1Not available 11.0�� 15.2 –27.3 17.5 32.8 –46.8 1.6 2.2 –26.8

Diesel fuel 16.0�� 19.7 –18.8 182.2 793.9 –77.1 11.4 40.4 –71.8Less than 400 1.7�� 1.1 57.5 24.0 14.3 67.5 13.9 13.1 6.3400 to 599 3.3�� 2.8 17.9 42.9 39.6 8.4 12.8 13.9 –8.0600 to 799 1.9�� 2.9 –33.5 18.9 208.3 –90.9 9.9 72.6 –86.3800 or more 4.5�� 5.9 –23.8 72.2 337.9 –78.6 16.0 56.9 –71.9Not available 4.5�� 6.9 –35.5 24.1 193.8 –87.6 5.4 28.1 –80.7

Other fuel .4�� .7 –43.3 S S S S S SLess than 400 .2�� S S S S S S S S400 or more S�� .3 S S S S S S SNot available S�� .3 S S S S S S S


REFUELING LOCATION


Other company’s/contractor’s facility not open tothe public .7�� N N 13.8 N N 18.7 N N

Other V�� N N V N N V N NNot reported 1.4�� N N 9.2 N N 6.8 N NNot applicable2 1.6�� N N S N N S N N







Percentchange

2002 truckmiles

(millions)

1997 truckmiles



truck(thousands)


truck(thousands)

Percentchange

A B C D E F G H I

MAINTENANCE4

General maintenance performed by:None performed 1.2�� .2 514.5 2.9 S S 2.5 S SCompany�owned maintenance facility 9.9�� 12.5 –20.8 105.2 488.2 –78.4 10.6 38.9 –72.8General repair business or private mechanic 7.9�� 7.9 –.9 87.8 257.5 –65.9 11.2 32.4 –65.6Dealership service department 1.4�� 2.1 –34.2 23.6 97.7 –75.8 17.0 46.2 –63.3Leasing company S�� .2 S S 8.3 S S 51.3 S

Individual not employed/paid by anymaintenance type facility 16.9�� 24.1 –29.9 77.4 227.8 –66.0 4.6 9.5 –51.5

Other V�� .2 N V S S V S SNot reported 1.1�� 2.6 –59.1 9.2 62.4 –85.2 8.5 23.6 –63.8Not applicable2 1.6�� N N S N N S N N

Extensive repairs performed by:None performed 28.2�� 1.3 2 098.0 180.9 12.0 1 411.6 6.4 9.3 –31.2Company�owned maintenance facility 1.0�� 4.5 –77.4 14.1 110.7 –87.3 13.8 24.5 –43.8General repair business or private mechanic 2.6�� 7.6 –66.3 28.7 120.8 –76.3 11.2 15.9 –29.5Dealership service department .8�� 5.7 –86.5 16.1 348.7 –95.4 20.9 61.0 –65.8Leasing company V�� S S V S S V S S

Component distributorship (engine,transmission, body, etc.) .2�� 3.2 –93.8 5.5 265.1 –97.9 27.6 83.0 –66.8

Individual not employed/paid by any repair typefacility 1.6�� 6.0 –73.3 12.4 33.2 –62.7 7.7 5.5 39.6

Other V�� .1 N V 4.8 N V 44.4 NNot reported V�� 17.8 N V 183.5 N V 10.3 NNot applicable2 1.6�� N N S N N S N N


Single�unit trucks and truck�tractors withouttrailer 29.9�� 31.2 –4.0 163.8 167.6 –2.3 5.5 5.4 1.82 axles 23.7�� 25.1 –5.7 126.5 120.0 5.4 5.3 4.8 11.73 axles 5.4�� 5.5 –2.0 27.5 40.4 –31.9 5.1 7.4 –30.54 axles .8�� .6 38.2 9.0 7.2 25.4 11.3 12.5 –9.25 axles or more .1�� N N .7 N N 10.7 N NNot reported S�� V S S V S S V S

Combinations 6.6�� 12.3 –45.9 91.4 709.7 –87.1 13.8 57.9 –76.2Single�unit trucks with trailer 2.2�� 2.2 –.8 21.1 44.4 –52.5 9.7 20.2 –52.2

3 axles .2�� S S S S S S S S4 axles .8�� 1.0 –20.4 5.9 9.9 –40.2 7.7 10.3 –24.95 axles or more 1.1�� 1.2 –8.1 13.8 33.9 –59.3 12.8 29.0 –55.7Not reported S�� N N S N N S N N

Truck�tractors with single trailer 4.0�� 8.8 –54.5 53.3 576.3 –90.8 13.3 65.3 –79.73 axles .1�� .4 –73.8 S 7.4 S S 19.9 S4 axles .2�� .5 –52.8 1.2 19.8 –94.2 4.8 38.6 –87.75 axles or more 3.4�� 7.9 –56.7 48.8 549.1 –91.1 14.2 69.2 –79.5Not reported .2�� N N 2.0 N N 8.3 N N

Truck�tractors with double trailers .4�� 1.2 –64.8 17.1 89.0 –80.8 39.3 72.2 –45.55 axles V�� S S V S S V S S6 axles V�� .2 N V S S V S S7 axles .2�� .5 –70.5 5.3 39.9 –86.7 34.4 76.3 –55.08 axles or more .3�� .5 –49.2 11.7 42.8 –72.6 44.2 81.8 –46.0Not reported S�� N N S N N S N N

Truck�tractors with triple trailers V�� V N V V N V V N7 axles V�� V N V V N V V N8 axles V�� V N V V N V V N9 axles V�� V N V V N V V N10 axles or more V�� V N V V N V V NNot reported V�� N N V N N V N N

Driving axles:1 23.2�� 26.5 –12.5 115.3 147.4 –21.7 5.0 5.6 –10.52 13.1�� 16.7 –21.1 138.2 718.4 –80.8 10.5 43.1 –75.63 or more .1�� .3 –50.6 1.3 11.5 –89.0 10.2 45.9 –77.7Not reported .1�� V N .5 V N 4.2 V N

Total liftable axles and locations9:None 34.9�� 15.5 125.3 230.2 283.2 –18.7 6.6 18.3 –63.91 1.4�� 1.5 –1.9 23.4 48.4 –51.7 16.2 32.8 –50.7

Forward of the drive axle 1.1�� N N 17.5 N N 15.9 N NBelow the chassis .1�� N N S N N S N NBeyond the chassis .1�� N N .9 N N 10.7 N NNot reported .2�� N N 3.6 N N 21.6 N N

2 or more .1�� .2 –62.8 1.0 6.2 –83.7 12.2 28.0 –56.2Forward of the drive axle .1�� N N 1.0 N N 12.2 N NBelow the chassis .1�� N N S N N S N NBeyond the chassis .1�� N N S N N S N NNot reported V�� N N V N N V N N

Not reported .1�� N N .6 N N 6.6 N N

Total liftable axles and number of braking axles:None 34.9�� 15.5 125.3 230.2 283.2 –18.7 6.6 18.3 –63.91 1.4�� 1.5 –1.9 23.4 48.4 –51.7 16.2 32.8 –50.7

0 braking .2�� N N 3.0 N N 12.2 N N1 braking 1.2�� N N 19.6 N N 16.7 N NNot reported S�� N N S N N S N N

2 or more .1�� .2 –62.8 1.0 6.2 –83.7 12.2 28.0 –56.20 braking V�� N N V N N V N N1 braking V�� N N V N N V N N2 or more braking .1�� N N 1.0 N N 12.2 N NNot reported V�� N N V N N V N N

Not reported .1�� N N .6 N N 6.6 N N







Percentchange

2002 truckmiles

(millions)

1997 truckmiles



truck(thousands)


truck(thousands)

Percentchange

A B C D E F G H I

CAB TYPE

Conventional cab 32.8�� 36.1 –9.2 221.2 769.5 –71.3 6.7 21.3 –68.3With sleeper 1.8�� N N 27.1 N N 15.2 N NWithout sleeper 30.9�� N N 193.1 N N 6.3 N NNot reported .1�� N N 1.0 N N 6.9 N N

Cab over engine 3.6�� 3.5 3.8 33.3 43.6 –23.5 9.2 12.5 –26.4With sleeper .7�� N N 2.8 N N 3.8 N NWithout sleeper 2.9�� N N 30.5 N N 10.7 N NNot reported S�� N N S N N S N N

Cab forward of engine .1�� .9 –93.5 S 7.8 S S 9.1 SCab beside engine S�� S S S S S S S SNot reported S�� N N S N N S N N


1Comparability of estimates may vary across survey years due to changes in category definitions.2Vehicles not in use. When the respondent had partial�year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent.3Truck�tractors not in use.4Detail lines do not add to total trucks because items were not applicable or multiple responses were possible.5Vehicles that are private, rental, or used for personal transportation; and vehicles not in use.6Distributed miles data are available in Table 8.7Vehicles that are rental or used for personal tranportation; and vehicles not in use.8Data were derived from administrative records.9Detail lines do not add to the subtotal line because items were not applicable or multiple responses were possible. When 2 or 3 liftable axles were indicated, respondents properly reported



Note: Table 3b provides estimated measures of sampling variability. The Introduction gives information on confidentiality protection, sampling error, nonsampling error, sample design, anddefinitions. Links to this information on the Internet may be found at www.census.gov/svsd/www/02vehinv.html.


Table 3b. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,Minivans, Other Light Vans, and Sport Utilities�Measures of Sampling Variability:2002 and 1997



trucks1997

trucksPercentchange

2002 truckmiles

1997 truckmiles

Percentchange


truck


truckPercentchange

A B C D E F G H I

Total .9�� 2.0 1.9 4.4 3.7 1.7 4.3 3.6 2.0

BUSINESS

For�hire transportation or warehousing 14.7�� 6.0 3.7 18.4 5.9 1.2 13.1 3.4 3.6Vehicle leasing or rental 47.1�� S S S S S S S SAgriculture, forestry, fishing, or hunting 3.2�� 4.7 5.2 7.0 8.1 6.5 6.7 7.7 6.7Mining 20.6�� 25.5 35.3 29.5 29.1 18.3 24.0 25.2 14.3Utilities 14.1�� 22.6 48.3 18.4 28.6 96.3 13.4 16.9 33.6

Construction 6.2�� 6.9 8.7 8.9 10.4 8.6 7.4 9.1 7.8Manufacturing 33.3�� 30.1 23.0 38.1 35.7 31.9 30.6 27.9 49.4Wholesale trade 18.5�� 15.4 13.6 22.4 18.6 13.5 13.9 16.0 17.5Retail trade 13.7�� 21.0 19.5 20.2 19.2 15.4 14.9 13.5 14.3Information services S�� N N S N N S N N


Arts, entertainment, or recreation services S�� N N S N N S N NAccommodation or food services 38.6�� N N S N N S N NOther services 22.5�� N N 29.1 N N 19.6 N NPersonal transportation S�� 17.7 S S 26.2 S S 19.8 SNot reported 20.3�� N N 27.3 N N 23.1 N NNot applicable1 14.5�� 21.2 44.5 S S S S S S

BODY TYPE

Single�unit trucks 1.2�� 2.7 2.8 5.4 6.1 7.1 5.2 5.5 6.9Armored S�� N N S N N S N NBeverage S�� 40.1 S S S S S S SConcrete mixer 16.5�� 17.1 19.0 22.3 20.5 19.0 15.0 11.4 14.8Concrete pumper S�� N N S N N S N NCrane S�� 35.3 S S 46.7 S S 45.0 S

Curtainside S�� N N S N N S N NDump 6.3�� 9.6 19.4 10.4 12.7 17.2 9.3 11.6 9.2Flatbed, stake, or platform 5.7�� 8.3 7.7 11.8 14.8 15.0 10.4 11.3 15.9Low boy S�� S S S S S S S SPole, logging, pulpwood, or pipe 23.9�� 27.2 24.4 30.4 30.0 27.3 18.8 25.0 29.8

Service, utility 14.1�� 26.1 75.3 19.7 31.3 167.7 13.7 20.3 43.8Service, other 23.2�� 21.2 20.3 32.9 29.0 17.1 24.1 19.7 18.8Street sweeper S�� N N S N N S N NTank, dry bulk 30.5�� S S 32.3 S S 25.4 S STank, liquids or gases 14.2�� 16.7 26.1 23.7 23.1 18.3 18.1 19.6 12.4

Tow/Wrecker 25.1�� 33.0 54.7 40.2 45.7 68.3 33.2 44.0 46.9Trash, garbage, or recycling 24.0�� 27.7 27.2 27.8 33.1 93.3 19.0 29.4 101.8Vacuum 47.1�� N N S N N S N NVan, basic enclosed 16.0�� 17.9 23.2 20.6 23.8 12.6 16.7 19.3 10.6Van, insulated nonrefrigerated S�� N S S N S S N S

Van, insulated refrigerated 31.5�� 40.1 58.7 38.3 S S 27.5 S SVan, open top 6.9�� 6.6 7.3 11.2 10.9 8.1 9.5 9.4 9.1Van, step, walk�in, or multistop 19.6�� 31.9 72.7 26.2 38.5 160.7 17.5 22.0 49.9Van, other 32.7�� N N S N N S N NOther N�� N N N N N N N N

Truck�tractors 4.1�� 3.8 2.7 8.2 4.7 1.0 7.6 3.4 1.8Automobile carrier N�� N N N N N N N NBeverage S�� S S S S S S S SCurtainside N�� N N N N N N N NDump 12.2�� 14.2 18.4 17.9 18.3 7.3 13.1 11.7 5.1Flatbed, stake, or platform 11.8�� 8.5 4.5 21.2 9.5 1.6 17.6 7.0 4.1

Livestock 24.3�� 19.2 20.4 38.2 27.8 8.0 34.0 20.1 10.2Low boy 15.4�� 14.5 14.1 24.2 18.7 4.3 18.7 11.9 4.7Mobile home toter S�� N N S N N S N NOpen top 10.0�� 16.2 16.9 20.8 26.1 7.0 18.3 16.0 5.7Pole, logging, pulpwood, or pipe 24.7�� 18.5 13.3 27.6 20.0 13.2 12.4 7.6 13.1

Tank, dry bulk 30.2�� S S 42.5 S S 29.9 S STank, liquids or gases 30.2�� 26.8 24.1 38.7 30.4 13.8 24.2 14.5 13.3Van, basic enclosed 21.7�� 13.1 5.7 33.4 13.7 1.7 25.3 8.6 5.8Van, drop�frame S�� 30.6 S S 38.0 S S 22.6 SVan, insulated nonrefrigerated N�� S S N S S N S S

Van, insulated refrigerated S�� 13.4 S S 12.2 S S 5.1 SOther N�� N N N N N N N NNot applicable2 26.3�� N N N N N N N N

ANNUAL MILES

Less than 5,000 2.6�� 4.2 5.0 4.1 7.3 8.1 3.3 4.6 5.45,000 to 9,999 7.1�� 7.7 8.5 7.3 7.9 9.3 1.7 1.8 2.610,000 to 19,999 8.2�� 12.4 13.4 8.5 13.0 14.2 1.9 1.8 2.720,000 to 29,999 12.0�� 12.9 18.4 12.2 13.1 19.2 1.7 1.6 2.330,000 to 49,999 15.6�� 11.2 9.9 15.3 11.0 9.5 2.4 1.8 2.9

50,000 to 74,999 20.7�� 13.2 7.7 21.0 14.1 7.9 3.0 2.0 3.575,000 or more 27.6�� 6.1 1.1 27.9 5.8 .8 4.0 1.9 3.5Not applicable1 14.5�� 22.1 52.7 S N S S N S



Table 3b. Trucks, Truck Miles, and Average Annual Miles for Trucks, Excluding Pickups,Minivans, Other Light Vans, and Sport Utilities�Measures of Sampling Variability:2002 and 1997�Con.



trucks1997

trucksPercentchange

2002 truckmiles

1997 truckmiles

Percentchange


truck


truckPercentchange

A B C D E F G H I


Off�the�road 8.1�� 7.0 6.4 14.5 15.2 9.9 13.0 14.0 15.150 miles or less 2.8�� 4.6 5.2 6.3 7.3 8.3 5.8 6.1 7.651 to 100 miles 8.2�� 8.9 9.5 12.7 14.4 10.0 10.6 11.5 10.4101 to 200 miles 16.0�� 12.3 11.8 19.1 14.5 6.2 15.2 10.4 8.2201 to 500 miles 19.7�� 12.8 8.8 26.4 14.2 3.1 23.9 9.4 7.1

501 miles or more 33.4�� 6.1 2.2 S 6.4 S S 3.7 SNot reported 9.7�� 22.1 103.1 14.3 N N 11.9 N NNot applicable 14.5�� N N S N N S N N


Operated in Canada N�� N N N N N N N NOperated in Mexico N�� N N N N N N N NOperated within the home base state 1.4�� N N 4.6 N N 4.5 N NOperated in states other than the home basestate 21.7�� N N 32.4 N N 28.0 N N


MONTHS OPERATED


VEHICLE SIZE

Light 13.9�� 11.0 5.0 19.4 15.1 11.9 13.8 12.1 31.6Medium 6.7�� 8.1 11.5 13.0 14.9 25.5 11.2 12.4 19.8Light�heavy 5.3�� 8.2 11.2 14.2 19.9 22.7 13.2 15.6 16.5Heavy�heavy 2.6�� 2.8 3.2 5.4 4.1 1.4 5.2 4.0 1.6


Less than 6,001 S�� 15.6 S S 28.7 S S 24.5 S6,001 to 8,500 23.6�� N N 32.1 N N 21.8 N N8,501 to 10,000 18.4�� N N 23.8 N N 15.7 N N10,001 to 14,000 10.4�� 14.1 24.3 19.0 23.0 49.3 16.0 17.5 28.314,001 to 16,000 14.6�� 16.1 20.2 24.3 22.1 37.9 19.9 17.5 33.0

16,001 to 19,500 15.4�� 15.8 19.2 26.4 30.2 36.4 21.4 25.2 34.519,501 to 26,000 5.3�� 8.2 11.2 14.2 19.9 22.7 13.2 15.6 16.526,001 to 33,000 9.1�� 10.4 14.7 19.0 17.6 23.2 16.7 15.3 19.033,001 to 40,000 12.7�� 13.3 16.6 25.2 21.8 14.7 22.4 17.9 13.940,001 to 50,000 5.5�� 7.6 10.2 9.4 14.0 9.8 8.1 13.1 8.2

50,001 to 60,000 8.0�� 11.1 19.7 12.6 18.4 10.2 9.7 15.0 5.760,001 to 80,000 5.4�� 4.3 3.3 10.2 5.6 1.0 8.8 3.7 1.780,001 to 100,000 10.7�� 17.5 18.9 16.0 24.6 9.6 11.9 11.3 5.8100,001 to 130,000 14.2�� 11.9 9.8 18.8 13.9 6.2 12.3 7.3 7.2130,001 or more S�� S S S S S S S S

TOTAL LENGTH (FEET)

Less than 20.0 6.1�� 8.3 8.1 12.9 12.6 13.9 11.5 10.8 15.520.0 to 27.9 3.6�� 4.6 5.4 8.5 10.9 12.4 7.7 9.0 11.528.0 to 35.9 7.0�� 8.4 12.7 15.7 10.9 18.4 13.9 8.9 13.736.0 to 40.9 15.3�� 16.4 26.8 21.9 20.3 22.3 18.3 15.4 14.941.0 to 44.9 24.0�� 22.4 25.6 30.5 27.1 12.4 22.0 20.9 11.8

45.0 to 49.9 16.4�� 20.4 43.1 20.1 26.4 16.6 14.7 18.7 7.250.0 to 54.9 12.7�� 18.3 36.7 19.9 23.4 19.3 16.9 18.2 9.555.0 to 59.9 10.5�� 11.3 11.9 18.7 15.9 7.2 15.5 12.1 7.560.0 to 64.9 10.1�� 9.6 9.8 15.5 12.0 3.6 12.5 8.2 3.965.0 to 69.9 13.2�� 9.6 4.6 22.1 10.3 1.0 17.8 4.9 2.8

70.0 to 74.9 23.0�� 12.8 3.8 32.7 12.1 1.1 23.2 5.1 5.075.0 to 79.9 25.5�� N N 34.6 N N 23.4 N N80.0 or more 18.2�� N N 25.3 N N 17.5 N N

MILES PER GALLON

Less than 5 6.1�� 6.8 7.7 9.6 11.2 4.8 8.8 9.6 5.15 to 6.9 4.8�� 4.0 3.8 7.8 5.3 1.3 7.4 5.1 2.07 to 8.9 6.8�� 11.1 12.0 14.1 16.4 20.0 12.4 15.4 19.89 to 10.9 9.7�� 13.1 13.5 17.8 25.5 27.9 14.8 17.8 25.111 to 12.9 16.0�� 16.6 18.7 22.8 24.0 27.8 16.2 18.3 25.213 to 14.9 23.5�� 28.2 38.3 35.5 32.3 151.4 25.0 22.4 101.515 or more 27.5�� 24.4 21.1 41.3 34.1 21.2 29.7 24.4 26.6

15 to 20.9 27.5�� 24.4 21.1 41.3 34.1 21.2 29.7 24.4 26.621 to 24.9 N�� N N N N N N N N25 or more N�� N N N N N N N N

Not reported 6.8�� 8.2 12.4 11.7 12.4 7.4 10.3 12.2 5.9Not applicable1 14.5�� N N S N N S N N






trucks1997

trucksPercentchange

2002 truckmiles

1997 truckmiles

Percentchange


truck


truckPercentchange

A B C D E F G H I

MODEL YEAR

2003 N�� N N N N N N N N2002 S�� N N S N N S N N2001 23.7�� N N 23.3 N N 13.5 N N2000 19.6�� N N 23.5 N N 13.0 N N1999 25.1�� N N 28.2 N N 15.9 N N

1998 29.0�� S S 33.0 S S 16.9 S S1997 23.0�� 16.8 21.3 23.8 17.4 4.5 17.2 12.9 4.41996 19.4�� 30.7 18.3 21.4 15.9 4.7 14.9 23.6 9.71995 21.8�� 15.1 13.1 25.8 14.5 2.8 17.3 12.7 4.11994 18.9�� 16.1 14.1 22.4 15.9 4.1 17.0 9.7 5.21993 17.5�� 18.5 33.1 21.4 17.8 5.1 13.8 11.6 2.5Pre�1993 1.7�� 2.2 2.2 5.6 4.4 2.2 5.4 4.4 2.7

VEHICLE ACQUISITION

New 5.8�� 6.4 6.3 8.9 7.2 2.9 7.1 6.6 3.4Used 2.1�� 3.2 3.5 5.2 5.6 4.0 5.1 5.5 4.2Not reported 15.6�� 8.2 6.9 20.1 8.9 .8 14.1 6.7 1.5



Vehicle only 20.7�� N N 22.7 N N 9.7 N NVehicle with driver N�� N N N N N N N NNot reported S�� N N S N N S N N

Lessor 27.7�� N N 47.1 N N 38.0 N NVehicle only 33.9�� N N 39.2 N N 19.5 N NVehicle with driver 48.0�� N N S N N S N NNot reported N�� N N N N N N N N



1 to 11 months 48.0�� N N S N N S N N12 months or more 17.9�� N N 21.0 N N 10.9 N NNot reported S�� N N S N N S N N

Provisions of lease:Financing only 19.8�� N N 21.9 N N 9.7 N NFull maintenance 31.8�� N N 44.5 N N 21.9 N NPayment of taxes 30.3�� N N 41.0 N N 27.5 N NObtaining licenses and permits 31.0�� N N 37.3 N N 22.9 N NRecordkeeping 33.5�� N N 42.6 N N 26.8 N NFuel contract 33.9�� N N S N N S N N


Private 1.5�� N N 4.9 N N 4.7 N NMotor carrier 12.2�� N N 15.7 N N 11.4 N NOwner operator 12.5�� N N 15.2 N N 12.9 N NRental 40.4�� N N 46.0 N N 25.9 N NPersonal transportation S�� N N S N N S N NNot applicable1 14.5�� N N S N N S N N


Contract 15.1�� N N 17.4 N N 13.5 N NCommon 12.8�� N N 16.9 N N 12.4 N NNot reported 22.6�� N N 28.8 N N 20.9 N NNot applicable3 1.2�� N N 4.9 N N 4.7 N N

Type of service:Truckload 10.3�� 6.6 5.2 12.5 6.7 1.5 10.6 3.4 2.8Less�than truckload 21.5�� 14.1 17.9 28.5 14.3 5.6 18.1 10.2 5.3Not reported 23.1�� N N 28.8 N N 21.8 N NNot applicable3 1.2�� N N 4.9 N N 4.7 N N

Source of hauls:Shippers or receivers 12.3�� N N 14.5 N N 10.2 N NBrokers S�� N N S N N S N NCentralized markets or exchanges S�� N N S N N S N NOther N�� N N N N N N N NNot reported 14.0�� N N 17.5 N N 14.5 N NNot applicable3 1.2�� N N 4.9 N N 4.7 N N


Carrying hazardous materials 16.7�� 14.6 15.2 21.1 16.0 7.6 15.2 14.1 8.7Not carrying hazardous materials 1.6�� 2.1 2.3 4.8 4.4 2.0 4.7 4.0 2.2Not reported 11.4�� 8.7 6.8 18.1 13.0 3.6 14.8 12.7 6.7Not applicable5 13.2�� N N 38.2 N N 36.0 N N






trucks1997

trucksPercentchange

2002 truckmiles

1997 truckmiles

Percentchange


truck


truckPercentchange

A B C D E F G H I

EQUIPMENT TYPE

Aerial work platform/bucket 20.9�� N N 28.4 N N 19.4 N NAir bag(s) (safety device only) 15.4�� 8.4 10.5 18.4 9.6 3.3 11.2 6.4 3.5Air compressor (except air brakes) 12.3�� N N 17.8 N N 15.3 N NAir�conditioning 5.1�� 5.5 4.7 7.3 4.9 1.7 5.7 4.7 2.2Air springs 7.5�� N N 12.1 N N 10.6 N N

Antilock brake system 10.5�� 11.4 15.3 12.9 12.3 5.7 9.0 9.1 4.1Collision warning system 36.7�� N N 39.2 N N 29.8 N NComputerized drive train control unit 26.5�� N N 30.1 N N 18.4 N NCrane 21.4�� N N 29.8 N N 24.5 N NElectronic vehicle identification device S�� 17.2 S S 15.2 S S 6.3 S

Engine retarder/brake 3.6�� 4.3 4.2 7.5 5.9 1.7 6.8 4.0 1.8Front�wheel drive N�� N N N N N N N NHoist 3.9�� N N 9.5 N N 8.9 N NIdle�reducing technology (portable auxiliary pack,electrification, etc.) 32.1�� N N 38.1 N N 32.9 N N

Internet access N�� N N N N N N N N

Lift gate 15.5�� N N 26.1 N N 21.4 N NMounting bar for snowplow 40.0�� N N S N N S N NNavigational system N�� 25.5 N N 25.3 N N 19.1 NPower take�off 3.6�� N N 7.4 N N 6.9 N NRadial tires 3.0�� 3.9 3.5 5.7 4.4 1.8 5.1 4.6 2.5

Reflective material in addition to those requiredby law 9.3�� 7.5 5.6 14.1 9.7 2.2 11.4 7.8 3.8

Road speed governor 7.2�� 5.8 4.8 11.5 7.0 1.8 9.8 6.1 3.0Toolbox 5.8�� N N 8.2 N N 6.9 N NTrip recorder or on�board computer withcommunication capabilities 32.8�� N N 42.6 N N 22.6 N N


Vehicle control aids for handicapped drivers N�� N N N N N N N NWheelchair lift N�� N N N N N N N NWinch 14.7�� N N 20.9 N N 16.1 N N

Transmission type:Automatic 8.6�� N N 12.1 N N 8.5 N NManual 1.6�� N N 5.2 N N 5.1 N NSemiautomated manual 33.2�� N N S N N S N NAutomated manual S�� N N S N N S N NNot reported 15.4�� N N 19.2 N N 14.0 N N

Braking system:Hydraulic (standard) 4.3�� 5.4 7.4 11.4 11.7 23.2 10.5 10.4 19.7Hydraulic with power assist 6.0�� 6.4 6.3 12.0 13.4 9.8 10.4 10.5 11.2Air 2.8�� 2.8 3.2 5.6 4.4 1.3 5.3 3.9 1.5Other N�� S S N S S N S SNot reported 13.9�� N N 19.7 N N 15.4 N N


Fuel type:Gasoline 2.8�� 3.9 4.0 9.2 7.5 11.1 8.7 6.5 12.1Diesel 2.8�� 3.5 3.6 5.4 4.1 1.5 4.6 3.9 1.7Natural gas N�� N N N N N N N NPropane 37.1�� N N S N N S N NAlcohol fuels N�� N N N N N N N N

Electricity N�� N N N N N N N NCombination S�� N N S N N S N NOther N�� N N N N N N N NNot reported S�� N N S N N S N NNot applicable1 14.5�� N N S N N S N N

Cylinders6:4 cylinders 22.5�� 40.7 111.4 24.5 46.2 70.6 22.0 14.7 14.96 cylinders 4.0�� 6.8 6.3 6.7 4.7 1.8 5.4 6.2 2.38 cylinders 4.2�� 5.1 6.9 9.0 10.0 11.7 7.9 8.6 9.8Other 4.2�� 3.8 4.1 8.3 8.8 3.3 7.6 8.6 4.3

Cubic inch displacement6:Gasoline fuel 2.8�� 3.9 4.0 9.2 7.5 11.1 8.7 6.5 12.1

Less than 200 S�� N S S N S S N S200 to 299 49.3�� S S S S S S S S300 to 349 31.0�� 30.1 34.4 S 42.3 S S 28.5 S350 to 399 9.5�� 12.2 19.0 17.2 17.7 23.9 14.3 12.4 14.9400 or more 11.8�� 13.1 16.7 17.2 19.2 32.5 11.8 13.5 23.9Not available 4.9�� 5.9 5.5 9.7 10.0 7.4 8.4 7.1 8.0

Diesel fuel 2.8�� 3.5 3.6 5.4 4.1 1.5 4.6 3.9 1.7Less than 400 14.3�� 21.0 40.1 21.2 26.0 56.2 15.6 16.1 23.8400 to 599 9.9�� 18.5 24.7 13.6 21.8 27.9 9.1 11.2 13.2600 to 799 9.6�� 10.8 9.6 12.6 11.7 1.6 10.4 6.7 1.7800 or more 4.2�� 4.4 4.7 8.2 6.1 2.2 7.1 4.4 2.3Not available 5.7�� 5.1 5.0 11.2 8.6 1.8 10.5 7.9 2.5

Other fuel 32.7�� 27.6 24.2 S S S S S SLess than 400 49.3�� S S S S S S S S400 or more S�� 44.2 S S S S S S SNot available S�� 43.2 S S S S S S S







trucks1997

trucksPercentchange

2002 truckmiles

1997 truckmiles

Percentchange


truck


truckPercentchange

A B C D E F G H I

REFUELING LOCATION



Other N�� N N N N N N N NNot reported 14.7�� N N 22.1 N N 17.3 N NNot applicable1 14.5�� N N S N N S N N

MAINTENANCE

General maintenance performed by:None performed 17.8�� 47.6 312.2 33.8 S S 30.9 S SCompany�owned maintenance facility 4.8�� 4.8 5.4 7.5 6.1 2.1 6.2 5.4 2.2General repair business or private mechanic 5.9�� 8.4 10.2 9.6 9.2 4.5 7.9 8.3 3.9Dealership service department 14.8�� 12.2 12.6 18.8 13.0 5.5 13.7 11.5 6.6Leasing company S�� 32.3 S S 36.9 S S 17.6 S

Individual not employed/paid by anymaintenance type facility 3.4�� 4.2 3.8 7.3 7.0 3.5 6.9 6.6 4.6

Other N�� 47.5 N N S S N S SNot reported 16.6�� 11.6 8.3 24.6 14.4 4.2 17.3 14.4 8.1Not applicable1 14.5�� N N S N N S N N

Extensive repairs performed by:None performed 1.9�� 17.7 390.5 5.5 30.7 471.3 5.3 30.3 21.1Company�owned maintenance facility 15.3�� 8.6 4.0 18.6 11.3 2.8 14.9 10.4 10.2General repair business or private mechanic 10.8�� 6.8 4.3 14.2 9.9 4.1 10.2 9.1 9.7Dealership service department 19.5�� 7.4 2.8 24.5 7.9 1.2 17.7 6.0 6.4Leasing company N�� S S N S S N S S

Component distributorship (engine,transmission, body, etc.) 31.8�� 9.7 2.1 37.1 9.8 .8 23.2 5.4 7.9

Individual not employed/paid by any repair typefacility 13.6�� 8.3 4.3 19.6 15.7 9.4 17.3 14.8 31.8

Other N�� 39.6 N N 48.5 N N 28.0 NNot reported N�� 5.6 N N 8.4 N N 7.8 NNot applicable1 14.5�� N N S N N S N N


Single�unit trucks and truck�tractors withouttrailer 1.4�� 2.9 3.1 5.8 6.8 8.8 5.7 6.0 8.42 axles 1.7�� 3.6 3.8 7.3 9.0 12.2 7.1 7.8 11.83 axles 3.8�� 6.1 7.0 7.7 9.7 8.5 6.7 8.7 7.64 axles 12.4�� 16.9 29.0 18.8 23.2 37.5 14.2 15.8 19.35 axles or more 42.9�� N N 48.3 N N 22.3 N NNot reported S�� N S S N S S N S

Combinations 4.5�� 3.6 3.1 7.2 4.4 1.1 6.6 3.6 1.8Single�unit trucks with trailer 11.6�� 12.1 16.6 15.8 15.0 10.3 13.2 13.0 8.8

3 axles 41.9�� S S S S S S S S4 axles 22.9�� 22.8 25.7 32.4 32.3 27.4 21.8 26.0 25.55 axles or more 13.3�� 11.7 16.3 19.2 17.2 10.5 17.2 12.6 9.4Not reported S�� N N S N N S N N

Truck�tractors with single trailer 4.4�� 4.3 2.8 8.7 5.3 .9 7.6 3.7 1.73 axles 36.2�� 28.6 12.1 S 33.3 S S 14.0 S4 axles 27.8�� 26.8 18.2 43.4 30.6 3.1 38.1 28.0 5.85 axles or more 4.9�� 4.4 2.8 9.3 5.5 1.0 7.9 3.5 1.8Not reported 23.1�� N N 34.8 N N 26.0 N N

Truck�tractors with double trailers 16.8�� 12.1 7.3 22.6 13.8 5.1 15.0 8.9 9.55 axles N�� S S N S S N S S6 axles N�� 47.6 N N S S N S S7 axles 28.7�� 17.8 10.0 39.4 20.9 5.9 26.9 11.0 13.18 axles or more 21.8�� 17.8 14.3 27.9 20.5 9.5 17.4 10.2 10.9Not reported S�� N N S N N S N N

Truck�tractors with triple trailers N�� N N N N N N N N7 axles N�� N N N N N N N N8 axles N�� N N N N N N N N9 axles N�� N N N N N N N N10 axles or more N�� N N N N N N N NNot reported N�� N N N N N N N N

Driving axles:1 1.9�� 3.4 3.4 7.7 8.2 8.8 7.5 7.2 9.32 2.6�� 2.8 3.0 5.4 4.3 1.3 4.9 3.9 1.53 or more 31.8�� 25.8 20.2 37.0 37.6 5.8 18.9 27.1 7.4Not reported 34.0�� N N 37.8 N N 16.6 N N

Total liftable axles and locations:None 1.0�� 4.2 9.7 4.7 6.7 6.7 4.6 6.5 2.91 8.9�� 16.1 18.0 14.2 26.7 14.6 11.1 18.6 10.7

Forward of the drive axle 10.3�� N N 15.8 N N 11.9 N NBelow the chassis 36.3�� N N S N N S N NBeyond the chassis 39.1�� N N 45.5 N N 23.2 N NNot reported 27.7�� N N 48.3 N N 39.6 N N

2 or more 39.1�� 35.8 19.7 43.8 42.6 10.0 19.7 39.7 19.4Forward of the drive axle 39.1�� N N 43.8 N N 19.7 N NBelow the chassis 48.0�� N N S N N S N NBeyond the chassis 48.0�� N N S N N S N NNot reported N�� N N N N N N N N

Not reported 36.3�� N N 44.1 N N 25.1 N N






trucks1997

trucksPercentchange

2002 truckmiles

1997 truckmiles

Percentchange


truck


truckPercentchange

A B C D E F G H I

TRUCK TYPE AND AXLEARRANGEMENT�Con.

Total liftable axles and number of braking axles:None 1.0�� 4.2 9.7 4.7 6.7 6.7 4.6 6.5 2.91 8.9�� 16.1 18.0 14.2 26.7 14.6 11.1 18.6 10.7

0 braking 22.5�� N N 35.5 N N 27.4 N N1 braking 10.0�� N N 15.8 N N 12.3 N NNot reported S�� N N S N N S N N

2 or more 39.1�� 35.8 19.7 43.8 42.6 10.0 19.7 39.7 19.40 braking N�� N N N N N N N N1 braking N�� N N N N N N N N2 or more braking 39.1�� N N 43.8 N N 19.7 N NNot reported N�� N N N N N N N N

Not reported 36.3�� N N 44.1 N N 25.1 N N

CAB TYPE

Conventional cab 1.3�� 2.1 2.2 4.7 4.2 1.8 4.5 3.9 1.9With sleeper 7.5�� N N 13.2 N N 10.9 N NWithout sleeper 1.4�� N N 5.1 N N 5.0 N NNot reported 30.3�� N N 45.1 N N 33.4 N N

Cab over engine 8.0�� 9.0 12.5 15.8 14.2 16.3 13.0 12.8 13.5With sleeper 13.9�� N N 20.2 N N 15.8 N NWithout sleeper 9.6�� N N 17.2 N N 13.9 N NNot reported S�� N N S N N S N N

Cab forward of engine 48.1�� 23.2 3.5 S 43.6 S S 36.3 SCab beside engine S�� S S S S S S S SNot reported S�� N N S N N S N N


1Vehicles not in use. When the respondent had partial�year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent.2Truck�tractors not in use.3Vehicles that are private, rental, or used for personal transportation; and vehicles not in use.4Distributed miles data are available in Table 8.5Vehicles that are rental or used for personal tranportation; and vehicles not in use.6Data were derived from administrative records.


Table 4. Trucks by Vehicle Size: 2002[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristicsVehicle size

Total Light Medium Light�heavy Heavy�heavy

Coefficient ofvariation of total

(percent)

Total 473.5�� 432.0 14.1 10.0 17.4 XCoefficient of variation (percent) .6�� .9 17.7 5.3 2.6 X

BUSINESS1

For�hire transportation or warehousing 2.3�� S .6 .2 .6 41.0Vehicle leasing or rental S�� S S V S SAgriculture, forestry, fishing, or hunting 50.5�� 31.1 3.9 6.0 9.5 10.0Mining .6�� V S S .4 20.6Utilities 8.0�� 6.3 .5 .5 .6 28.8

Construction 24.3�� 17.4 2.6 1.1 3.2 16.1Manufacturing S�� S S S .1 SWholesale trade 2.8�� S .1 .3 .4 46.0Retail trade 9.9�� 8.3 .5 .4 .7 26.8Information services S�� S V V S S

Waste management, landscaping, or administrative/support services 2.6�� S .3 .2 .4 48.3Arts, entertainment, or recreation services S�� S S S S SAccommodation or food services S�� S S V S SOther services 9.7�� 9.0 .3 .2 .2 28.9Personal transportation 333.4�� 329.1 4.4 V S 2.6Not reported 3.5�� S .2 .2 .4 43.9Not applicable2 16.8�� 15.2 .3 .5 .7 21.6

BODY TYPESingle�unit trucks 468.7�� 432.0 14.1 9.8 12.7 .7

Pickup 286.0�� 279.0 7.0 V V .9Minivan 32.2�� 32.2 V V V 15.1Other light vans 23.0�� 23.0 V V V 18.5Sport utility 95.7�� 95.7 V V V 6.1Armored S�� V V V S S

Beverage S�� V V V S SConcrete mixer .4�� V V V .4 16.5Concrete pumper S�� V V S S SCrane S�� V S V S SCurtainside S�� V V S V S

Dump 6.5�� V 1.3 1.7 3.5 6.3Flatbed, stake, or platform 8.9�� .7 2.5 3.5 2.3 5.7Low boy S�� V V V S SPole, logging, pulpwood, or pipe .2�� V V V .2 23.9Service, utility 2.0�� .2 .6 .7 .5 14.1

Service, other .8�� .3 .2 S S 23.2Street sweeper S�� V V V S STank, dry bulk .3�� V V S .2 30.5Tank, liquids or gases 1.5�� V S .3 1.1 14.2Tow/Wrecker .6�� V .2 S .2 25.1

Trash, garbage, or recycling .4�� V S S .3 24.0Vacuum .1�� V V S S 47.1Van, basic enclosed 1.4�� .2 .5 .4 .2 16.0Van, insulated nonrefrigerated S�� V V S V SVan, insulated refrigerated .4�� S S S S 31.5

Van, open top 6.4�� V .7 2.5 3.3 6.9Van, step, walk�in, or multistop 1.1�� .5 .6 S S 19.6Van, other .4�� .2 S S S 32.7Other V�� V V V V N

Truck�tractors 4.8�� V V .2 4.6 4.1Automobile carrier V�� V V V V NBeverage S�� V V V S SCurtainside V�� V V V V NDump .8�� V V V .8 12.2Flatbed, stake, or platform .9�� V V V .9 11.8

Livestock .3�� V V V .3 24.3Low boy .5�� V V V .5 15.4Mobile home toter S�� V V V S SOpen top 1.1�� V V V 1.1 10.0Pole, logging, pulpwood, or pipe .2�� V V V .2 24.7

Tank, dry bulk .1�� V V V .1 30.2Tank, liquids or gases .1�� V V V .1 30.2Van, basic enclosed .3�� V V V .3 21.7Van, drop�frame S�� V V V S SVan, insulated nonrefrigerated V�� V V V V N

Van, insulated refrigerated S�� V V V S SOther V�� V V V V NNot applicable3 .4�� V V .2 .2 26.3

ANNUAL MILESLess than 5,000 159.2�� 135.7 6.7 7.4 9.5 5.75,000 to 9,999 103.9�� 98.5 S 1.1 2.8 8.010,000 to 19,999 134.5�� 129.8 2.0 .5 2.1 6.720,000 to 29,999 45.0�� 40.3 3.2 .3 1.1 13.130,000 to 49,999 8.9�� 8.0 .2 S .6 29.6

50,000 to 74,999 3.3�� S S S .4 48.175,000 or more S�� S V V .2 SNot applicable2 16.8�� 15.2 .3 .5 .7 21.6

PRIMARY RANGE OF OPERATIONOff�the�road 20.5�� 16.0 .6 1.6 2.4 18.050 miles or less 309.3�� 287.5 7.2 5.7 8.9 3.151 to 100 miles 47.6�� 42.0 S .8 2.4 12.5101 to 200 miles 23.1�� 21.3 S S .6 18.6201 to 500 miles 7.0�� 6.3 S S .6 33.4

501 miles or more 16.3�� 15.2 S V .3 22.8Not reported 32.9�� 28.7 S 1.1 1.5 15.1Not applicable2 16.8�� 15.2 .3 .5 .7 21.6



Table 4. Trucks by Vehicle Size: 2002�Con.[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]




(percent)

PRIMARY JURISDICTIONOperated in Canada V�� V V V V NOperated in Mexico V�� V V V V NOperated within the home base state 419.3�� 383.9 11.6 8.6 15.2 1.6Operated in states other than the home base state 14.8�� 13.4 S S .4 23.7Not reported 22.6�� 19.6 S .7 1.1 18.3Not applicable2 16.8�� 15.2 .3 .5 .7 21.6

MONTHS OPERATED12 289.5�� 276.2 7.7 2.0 3.7 3.37 to 11 59.8�� 54.0 .9 1.4 3.5 10.92 to 6 79.9�� 65.4 3.8 3.6 7.1 8.91 or less 27.4�� 21.3 1.3 2.5 2.4 15.3Vehicle not used 16.8�� 15.2 .3 .5 .7 21.6

AVERAGE WEIGHT (POUNDS)Less than 6,001 288.4�� 288.4 N N N 3.36,001 to 8,500 112.4�� 112.4 N N N 7.68,501 to 10,000 31.1�� 31.1 N N N 15.810,001 to 14,000 8.7�� N 8.7 N N 24.614,001 to 16,000 2.7�� N 2.7 N N 33.6

16,001 to 19,500 2.6�� N 2.6 N N 35.019,501 to 26,000 10.0�� N N 10.0 N 5.326,001 to 33,000 4.3�� N N N 4.3 9.133,001 to 40,000 1.7�� N N N 1.7 12.740,001 to 50,000 4.2�� N N N 4.2 5.5

50,001 to 60,000 2.1�� N N N 2.1 8.060,001 to 80,000 3.5�� N N N 3.5 5.480,001 to 100,000 1.0�� N N N 1.0 10.7100,001 to 130,000 .6�� N N N .6 14.2130,001 or more S�� N N N S S

TOTAL LENGTH (FEET)Less than 20.0 347.7�� 340.8 3.3 2.2 1.5 2.420.0 to 27.9 71.0�� 54.1 4.7 6.3 6.0 9.328.0 to 35.9 27.1�� 19.6 S 1.2 3.4 15.836.0 to 40.9 16.9�� 14.8 S .2 .8 21.441.0 to 44.9 4.9�� S S S .3 39.6

45.0 to 49.9 1.0�� V S S .8 16.450.0 to 54.9 1.0�� V V S 1.0 12.755.0 to 59.9 1.1�� V V S 1.0 10.560.0 to 64.9 1.3�� V V V 1.3 10.165.0 to 69.9 .7�� V V V .7 13.2

70.0 to 74.9 .2�� V V V .2 23.075.0 to 79.9 .2�� V V V .2 25.580.0 or more .4�� V V V .4 18.2

MILES PER GALLONLess than 5 5.6�� V .3 .8 4.4 6.15 to 6.9 9.9�� .2 .9 2.8 6.0 4.87 to 8.9 6.7�� .6 1.6 2.2 2.3 6.89 to 10.9 52.4�� 46.4 4.2 1.0 .7 11.711 to 12.9 53.8�� 51.7 S .4 .3 11.913 to 14.9 47.7�� 47.1 .4 S .1 12.815 or more 237.8�� 234.9 S S S 4.1

15 to 20.9 184.0�� 181.1 S S S 5.321 to 24.9 35.1�� 35.1 V V V 15.225 or more 18.7�� 18.7 V V V 21.4

Not reported 42.8�� 36.0 2.0 2.0 2.8 12.8Not applicable2 16.8�� 15.2 .3 .5 .7 21.6

MODEL YEAR2003 V�� V V V V N2002 S�� S V V S S2001 15.8�� 14.3 S S .2 23.02000 28.0�� 27.1 S S .5 17.01999 27.5�� 26.1 S S .3 17.3

1998 20.9�� 20.6 .2 S .1 20.01997 19.3�� 17.9 S S .2 20.71996 19.5�� 17.8 S S .4 20.61995 25.6�� 24.1 S S .4 17.91994 29.3�� 28.6 .2 S .4 16.61993 23.2�� 22.3 .2 .3 .5 18.7Pre�1993 262.6�� 231.5 7.7 9.1 14.3 3.8

VEHICLE ACQUISITIONNew 134.9�� 124.3 4.8 2.5 3.3 6.7Used 323.0�� 293.4 9.1 7.1 13.4 2.9Not reported 15.5�� 14.3 S .3 .7 22.7

LEASE CHARACTERISTICSLeased 8.1�� 7.2 .3 S .6 31.2

Lessee 7.0�� 6.3 .2 S .4 33.9Vehicle only .7�� S .2 S .4 20.7Vehicle with driver V�� V V V V NNot reported S�� V V V S SNot applicable4 6.3�� 6.3 V V V 37.5

Lessor S�� S S V .2 SVehicle only .1�� V S V .1 33.9Vehicle with driver .1�� V V V .1 48.0Not reported V�� V V V V NNot applicable4 S�� S V V V S

Not reported S�� V V S S SNot leased 254.3�� 232.3 5.2 5.9 11.0 3.9Not reported 211.1�� 192.5 8.7 4.1 5.8 4.7







(percent)

LEASE CHARACTERISTICS�Con.Length of leasing agreement:

Leased 8.1�� 7.2 .3 S .6 31.21 to 11 months .1�� V V V .1 48.012 months or more .8�� S .3 S .5 17.9Not reported S�� V V S V SNot applicable4 7.2�� 7.2 V V V 35.1

Provisions of lease5:Financing only .7�� S .3 S .4 19.8Full maintenance .2�� V S S .1 31.8Payment of taxes .1�� V S V .1 30.3Obtaining licenses and permits .3�� S S V .1 31.0Recordkeeping .3�� S S V .1 33.5Fuel contract .1�� V S V .1 33.9

PRIMARY OPERATOR CLASSIFICATIONPrivate 115.4�� 84.2 7.6 9.1 14.6 6.7Motor carrier 3.8�� S .6 .4 1.0 34.7Owner operator 2.1�� V S S 1.0 42.3Rental S�� S S V .1 SPersonal transportation 333.4�� 329.1 4.4 V S 2.6Not applicable2 16.8�� 15.2 .3 .5 .7 21.6


Contract 1.0�� V .3 S .7 15.1Common 1.7�� V .4 .2 1.0 12.8Not reported .5�� V S S .3 22.6Not applicable6 470.3�� 432.0 13.3 9.6 15.4 .7

Type of service:Truckload 1.8�� V .3 .2 1.4 10.3Less�than truckload .8�� V .4 S .3 21.5Not reported .5�� V S S .3 23.1Not applicable6 470.3�� 432.0 13.3 9.6 15.4 .7

Source of hauls:Shippers or receivers 1.8�� V .4 .2 1.1 12.3Brokers S�� V V V S SCentralized markets or exchanges S�� V S S S SOther V�� V V V V NNot reported 1.3�� V .3 S .8 14.0Not applicable6 470.3�� 432.0 13.3 9.6 15.4 .7


Carrying hazardous materials 1.2�� S .2 S .8 16.7Not carrying hazardous materials 31.1�� 1.8 5.9 8.7 14.7 1.6Not reported 2.3�� S .5 .6 1.0 11.4Not applicable8 438.8�� 430.0 7.4 .5 .9 .7

EQUIPMENT TYPE5 9

Aerial work platform/bucket 1.0�� S .4 .4 .2 20.9Air bag(s) (safety device only) 159.2�� 154.4 4.1 S .6 5.9Air compressor (except air brakes) 1.8�� .2 .2 .3 1.0 12.3Air�conditioning 284.6�� 273.9 4.7 .7 5.3 3.3Air springs 2.3�� V V S 2.2 7.5

Antilock brake system 192.3�� 186.3 4.4 .3 1.3 5.0Collision warning system .3�� V .2 S .1 36.7Computerized drive train control unit 45.3�� 45.0 S V .3 13.2Crane .7�� S V .3 .2 21.4Electronic vehicle identification device S�� V V V S S

Engine retarder/brake 6.4�� S .1 .2 6.1 3.6Front�wheel drive 286.3�� 281.1 5.2 V V 3.3Hoist 14.4�� S 2.6 5.2 6.6 3.9Idle�reducing technology (portable auxiliary pack, electrification, etc.) .3�� V S S .1 32.1Internet access V�� V V V V N

Lift gate 1.5�� S .3 .6 .5 15.5Mounting bar for snowplow 5.6�� 5.3 S S S 38.8Navigational system V�� V V V V NPower take�off 15.4�� S 1.9 4.5 9.0 3.6Radial tires 317.2�� 293.7 9.5 3.3 10.6 2.9

Reflective material in addition to those required by law 3.0�� S .8 .4 1.8 9.3Road speed governor 5.1�� S .6 1.2 3.1 7.2Toolbox 67.3�� 56.6 5.3 1.7 3.7 9.6Trip recorder or on�board computer with communication capabilities 8.4�� 8.1 .2 S .1 31.8Trip recorder or on�board computer without communication capabilities 59.2�� 57.1 S V .3 11.4

Vehicle control aids for handicapped drivers V�� V V V V NWheelchair lift S�� S V V V SWinch 11.3�� 9.9 .3 .5 .7 25.6

Transmission type:Automatic 272.0�� 265.3 5.0 .6 1.1 3.4Manual 191.8�� 158.5 8.9 9.0 15.4 4.7Semiautomated manual .2�� V V S .2 33.2Automated manual S�� S V V S SNot reported 8.4�� 7.2 .2 .3 .7 29.7

Braking system:Hydraulic (standard) 12.6�� 1.5 3.4 5.3 2.4 4.3Hydraulic with power assist 8.4�� .5 2.7 2.9 2.3 6.0Air 13.9�� S .5 1.4 12.0 2.8Other V�� V V V V NNot reported 1.6�� S .4 .5 .7 13.9Not applicable10 436.9�� 429.9 7.0 V V .7







(percent)

FUEL TYPE AND ENGINE SIZEFuel type:

Gasoline 409.4�� 388.2 9.3 7.3 4.7 1.6Diesel 42.3�� 24.1 4.4 2.0 11.9 11.0Natural gas V�� V V V V NPropane S�� S S S S SAlcohol fuels V�� V V V V N

Electricity V�� V V V V NCombination 3.7�� 3.7 V S V 48.1Other V�� V V V V NNot reported S�� V V V S SNot applicable2 16.8�� 15.2 .3 .5 .7 21.6

Cylinders11:4 cylinders 47.2�� 46.9 .2 S .1 12.86 cylinders 143.4�� 133.6 1.1 1.2 7.6 6.18 cylinders 256.4�� 237.9 10.7 4.3 3.5 3.8Other 26.4�� 13.7 2.1 4.4 6.2 13.0

Cubic inch displacement11:Gasoline fuel 409.4�� 388.2 9.3 7.3 4.7 1.6

Less than 200 69.4�� 69.3 S V V 10.4200 to 299 89.0�� 88.9 S V V 8.3300 to 349 68.7�� 68.4 .2 S S 10.4350 to 399 124.4�� 119.1 2.7 1.9 .6 7.0400 or more 33.6�� 29.7 2.9 .3 .7 15.0Not available 24.4�� 12.8 3.4 5.0 3.2 14.0

Diesel fuel 42.3�� 24.1 4.4 2.0 11.9 11.0Less than 400 16.7�� 15.3 .7 .4 .3 21.4400 to 599 13.9�� 7.9 3.5 .9 1.6 21.6600 to 799 1.9�� S S .2 1.6 9.6800 or more 4.5�� V S V 4.5 4.2Not available 5.3�� S S .5 3.8 17.1

Other fuel 4.9�� 4.6 S S S 40.7Less than 400 3.8�� 3.6 S S V 47.5400 or more S�� S V S S SNot available S�� V V S S S

Not reported S�� V V V S SNot applicable2 16.8�� 15.2 .3 .5 .7 21.6

REFUELING LOCATIONGas station 383.4�� 367.4 7.3 3.7 5.0 2.0Truck stop 12.8�� 7.2 S .4 2.9 21.7Own facility (including home, farm, ranch, onsite by mobile supplier, etc.) 42.3�� 26.2 3.8 4.9 7.4 11.4Other company’s/contractor’s facility not open to the public 3.4�� S S S .6 45.1Other V�� V V V V NNot reported 14.8�� 13.4 .3 .2 .8 22.9Not applicable2 16.8�� 15.2 .3 .5 .7 21.6

MAINTENANCE5

General maintenance performed by:None performed 13.5�� 12.3 .4 .5 .2 24.0Company�owned maintenance facility 35.7�� 25.4 2.5 2.1 5.7 13.1General repair business or private mechanic 174.9�� 163.6 6.5 1.7 3.1 5.5Dealership service department 79.4�� 78.2 .3 S .8 9.5Leasing company S�� S V S S S

Individual not employed/paid by any maintenance type facility 213.2�� 195.2 4.6 5.2 8.2 4.6Other V�� V V V V NNot reported 13.6�� 11.6 S .2 .7 24.0Not applicable2 16.8�� 15.2 .3 .5 .7 21.6

Extensive repairs performed by:None performed 372.3�� 341.7 9.7 7.9 13.1 2.3Company�owned maintenance facility 4.6�� S S .2 .7 38.9General repair business or private mechanic 32.0�� 27.8 2.5 .5 1.2 15.5Dealership service department 19.6�� 18.8 .2 .2 .4 20.5Leasing company V�� V V V V N

Component distributorship (engine, transmission, body, etc.) S�� S S V .2 SIndividual not employed/paid by any repair type facility 20.3�� 17.9 S .5 .9 19.7Other V�� V V V V NNot reported S�� S V V V SNot applicable2 16.8�� 15.2 .3 .5 .7 21.6

TRUCK TYPE AND AXLE ARRANGEMENTSingle�unit trucks and truck�tractors without trailer 451.9�� 421.2 9.4 9.8 11.5 1.0

2 axles 445.7�� 421.2 9.4 9.7 5.4 1.03 axles 5.4�� S S .1 5.3 3.84 axles .8�� V V V .8 12.45 axles or more .1�� V V V .1 42.9Not reported S�� V V V S S

Combinations 21.6�� 10.8 4.7 .3 5.9 16.4Single�unit trucks with trailer 17.1�� 10.8 4.7 .3 1.4 20.7

3 axles 5.6�� 5.4 S S S 38.64 axles 9.5�� 5.3 3.8 V .4 28.75 axles or more 1.1�� S V .2 .9 13.3Not reported S�� V S S S S

Truck�tractors with single trailer 4.0�� V V V 4.0 4.43 axles .1�� V V V .1 36.24 axles .2�� V V V .2 27.85 axles or more 3.4�� V V V 3.4 4.9Not reported .2�� V V V .2 23.1

Truck�tractors with double trailers .4�� V V V .4 16.85 axles V�� V V V V N6 axles V�� V V V V N7 axles .2�� V V V .2 28.78 axles or more .3�� V V V .3 21.8Not reported S�� V V V S S

Truck�tractors with triple trailers V�� V V V V N7 axles V�� V V V V N8 axles V�� V V V V N9 axles V�� V V V V N10 axles or more V�� V V V V NNot reported V�� V V V V N







(percent)

TRUCK TYPE AND AXLE ARRANGEMENT�Con.Driving axles:

1 173.8�� 150.5 7.8 9.5 5.9 5.42 299.5�� 281.5 6.3 .5 11.2 3.23 or more .1�� V V V .1 31.8Not reported .1�� V V V .1 34.0

Total liftable axles and locations12:None 34.9�� 2.1 7.1 10.0 15.8 1.01 1.4�� V V V 1.4 8.9

Forward of the drive axle 1.1�� V V V 1.1 10.3Below the chassis .1�� V V V .1 36.3Beyond the chassis .1�� V V V .1 39.1Not reported .2�� V V V .2 27.7

2 or more .1�� V V V .1 39.1Forward of the drive axle .1�� V V V .1 39.1Below the chassis .1�� V V V .1 48.0Beyond the chassis .1�� V V V .1 48.0Not reported V�� V V V V N

Not reported .1�� V V V .1 36.3Not applicable10 436.9�� 429.9 7.0 V V .7

Total liftable axles and number of braking axles:None 34.9�� 2.1 7.1 10.0 15.8 1.01 1.4�� V V V 1.4 8.9

0 braking .2�� V V V .2 22.51 braking 1.2�� V V V 1.2 10.0Not reported S�� V V V S S

2 or more .1�� V V V .1 39.10 braking V�� V V V V N1 braking V�� V V V V N2 or more braking .1�� V V V .1 39.1Not reported V�� V V V V N

Not reported .1�� V V V .1 36.3Not applicable10 436.9�� 429.9 7.0 V V .7

CAB TYPEConventional cab 32.8�� 2.1 6.1 9.4 15.3 1.3

With sleeper 1.8�� V V V 1.8 7.5Without sleeper 30.9�� 2.1 6.1 9.3 13.4 1.4Not reported .1�� V V S .1 30.3

Cab over engine 3.6�� S 1.0 .7 2.0 8.0With sleeper .7�� V V S .7 13.9Without sleeper 2.9�� S 1.0 .6 1.2 9.6Not reported S�� V V V S S

Cab forward of engine .1�� V V V .1 48.1Cab beside engine S�� V V V S SNot reported S�� V S V .1 SNot applicable10 436.9�� 429.9 7.0 V V .7


1Comparability of estimates may vary across survey years due to changes in category definitions.2Vehicles not in use.3Truck�tractors not in use.4Lessees or lessors of pickups, minivans, other light vans, and sport utilities.5Detail lines do not add to total trucks because items were not applicable or multiple responses were possible.6Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are private, rental, or used for personal transportation; and vehicles not in use.7Distributed miles data are available in Table 8.8Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal transportation; and vehicles not in use.9Pickups, minivans, other light vans, and sport utilites, in the Equipment Type section, were only required to report for aerial work platform/bucket, air bag(s), air�conditioning, antilock brake




Note: The Appendix provides instructions for approximating unpublished coefficients of variation (CVs). CVs estimated from sample data are available on request. The Introductiongives information on confidentiality protection, sampling error, nonsampling error, sample design, and definitions. Links to this information on the Internet may be foundat www.census.gov/svsd/www/02vehinv.html.


Table 5. Trucks by Truck Type: 2002[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristics

Truck type

Combination

Total

Single�unittrucks and

truck�tractorswithout trailer Total

Single�unittruck with

trailer

Truck�tractorwith single

trailer

Truck�tractorwith double

trailers

Truck�tractorwith triple

trailers

Coefficient ofvariation of

total(percent)

Total 473.5�� 451.9 21.6 17.1 4.0 .4 V XCoefficient of variation (percent) .6�� 1.0 16.4 20.7 4.4 16.8 N X

BUSINESS1

For�hire transportation or warehousing 2.3�� S .5 S .3 .1 V 41.0Vehicle leasing or rental S�� S S S S V V SAgriculture, forestry, fishing, or hunting 50.5�� 44.3 6.3 3.6 2.5 .2 V 10.0Mining .6�� .5 .1 V .1 V V 20.6Utilities 8.0�� 7.8 .2 .2 S S V 28.8

Construction 24.3�� 21.1 3.2 S .8 .1 V 16.1Manufacturing S�� S S V S V V SWholesale trade 2.8�� 2.7 .1 S .1 V V 46.0Retail trade 9.9�� 9.7 .2 S .1 V V 26.8Information services S�� S S S V V V S

Waste management, landscaping, or administrative/support services 2.6� S S S S S V 48.3Arts, entertainment, or recreation services S�� S S S V V V SAccommodation or food services S�� S S S V V V SOther services 9.7�� 9.6 S S S V V 28.9Personal transportation 333.4�� 322.8 10.6 10.6 V V V 2.6Not reported 3.5�� 3.5 .1 V S S V 43.9Not applicable2 16.8�� 16.8 V V V V V 21.6

BODY TYPE

Single�unit trucks 468.7�� 451.5 17.1 17.1 N N N .7Pickup 286.0�� 272.0 14.0 14.0 N N N .9Minivan 32.2�� 32.2 V V N N N 15.1Other light vans 23.0�� 23.0 V V N N N 18.5Sport utility 95.7�� 94.8 S S N N N 6.1Armored S�� S V V N N N S

Beverage S�� S V V N N N SConcrete mixer .4�� .4 V V N N N 16.5Concrete pumper S�� S V V N N N SCrane S�� S V V N N N SCurtainside S�� S V V N N N S

Dump 6.5�� 5.9 .6 .6 N N N 6.3Flatbed, stake, or platform 8.9�� 8.0 .8 .8 N N N 5.7Low boy S�� V S S N N N SPole, logging, pulpwood, or pipe .2�� .1 .2 .2 N N N 23.9Service, utility 2.0�� 1.8 .2 .2 N N N 14.1

Service, other .8�� .7 S S N N N 23.2Street sweeper S�� S V V N N N STank, dry bulk .3�� .2 S S N N N 30.5Tank, liquids or gases 1.5�� 1.5 S S N N N 14.2Tow/Wrecker .6�� .5 S S N N N 25.1

Trash, garbage, or recycling .4�� .4 V V N N N 24.0Vacuum .1�� .1 V V N N N 47.1Van, basic enclosed 1.4�� 1.4 V V N N N 16.0Van, insulated nonrefrigerated S�� V S S N N N SVan, insulated refrigerated .4�� .3 S S N N N 31.5

Van, open top 6.4�� 6.3 .2 .2 N N N 6.9Van, step, walk�in, or multistop 1.1�� 1.1 V V N N N 19.6Van, other .4�� .4 S S N N N 32.7Other V�� V V V N N N N

Truck�tractors 4.8�� .4 4.5 N 4.0 .4 V 4.1Automobile carrier V�� N V N V V V NBeverage S�� N S N S V V SCurtainside V�� N V N V V V NDump .8�� N .8 N .7 .1 V 12.2Flatbed, stake, or platform .9�� N .9 N .7 .1 V 11.8

Livestock .3�� N .3 N .3 V V 24.3Low boy .5�� N .5 N .5 V V 15.4Mobile home toter S�� N S N S V V SOpen top 1.1�� N 1.1 N 1.0 .1 V 10.0Pole, logging, pulpwood, or pipe .2�� N .2 N .2 S V 24.7

Tank, dry bulk .1�� N .1 N .1 .1 V 30.2Tank, liquids or gases .1�� N .1 N .1 S V 30.2Van, basic enclosed .3�� N .3 N .3 S V 21.7Van, drop�frame S�� N S N S S V SVan, insulated nonrefrigerated V�� N V N V V V N

Van, insulated refrigerated S�� N S N S S V SOther V�� N V N V V V NNot applicable3 .4�� .4 V N V V V 26.3

ANNUAL MILES

Less than 5,000 159.2�� 149.3 9.9 8.2 1.7 S V 5.75,000 to 9,999 103.9�� 98.9 5.0 3.9 1.0 .1 V 8.010,000 to 19,999 134.5�� 131.1 3.4 S .5 S V 6.720,000 to 29,999 45.0�� 42.6 S S .4 .1 V 13.130,000 to 49,999 8.9�� 8.5 .4 .1 .3 .1 V 29.6

50,000 to 74,999 3.3�� S .3 .1 .2 S V 48.175,000 or more S�� S .2 S .1 .1 V SNot applicable2 16.8�� 16.8 V V V V V 21.6



Table 5. Trucks by Truck Type: 2002�Con.[Thousands. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]


Truck type

Combination

Total




trailer


trailer


trailers


trailers


total(percent)


Off�the�road 20.5�� 20.0 .5 .1 .4 S V 18.050 miles or less 309.3�� 299.8 9.5 7.4 1.9 .1 V 3.151 to 100 miles 47.6�� 44.5 3.0 S .8 .1 V 12.5101 to 200 miles 23.1�� 20.1 3.1 S .3 .1 V 18.6201 to 500 miles 7.0�� 6.8 .3 S .2 .1 V 33.4

501 miles or more 16.3�� 13.5 S S .1 V V 22.8Not reported 32.9�� 30.4 2.5 S .3 S V 15.1Not applicable2 16.8�� 16.8 V V V V V 21.6


Operated in Canada V�� V V V V V V NOperated in Mexico V�� V V V V V V NOperated within the home base state 419.3�� 400.9 18.4 14.3 3.7 .4 V 1.6Operated in states other than the home base state 14.8�� 13.8 S S .1 S V 23.7Not reported 22.6�� 20.5 S S .2 S V 18.3Not applicable2 16.8�� 16.8 V V V V V 21.6

MONTHS OPERATED

12 289.5�� 280.3 9.3 8.5 .7 .1 V 3.37 to 11 59.8�� 55.5 4.3 3.3 .9 .1 V 10.92 to 6 79.9�� 72.5 7.3 5.2 2.0 .2 V 8.91 or less 27.4�� 26.8 .7 .2 .5 S V 15.3Vehicle not used 16.8�� 16.8 V V V V V 21.6

VEHICLE SIZE

Light 432.0�� 421.2 10.8 10.8 V V V .9Medium 14.1�� 9.4 4.7 4.7 V V V 17.7Light�heavy 10.0�� 9.8 .3 .3 V V V 5.3Heavy�heavy 17.4�� 11.5 5.9 1.4 4.0 .4 V 2.6


Less than 6,001 288.4�� 284.8 3.6 3.6 V V V 3.36,001 to 8,500 112.4�� 107.9 4.5 4.5 V V V 7.68,501 to 10,000 31.1�� 28.5 S S V V V 15.810,001 to 14,000 8.7�� 6.0 S S V V V 24.614,001 to 16,000 2.7�� 1.8 S S V V V 33.6

16,001 to 19,500 2.6�� 1.5 S S V V V 35.019,501 to 26,000 10.0�� 9.8 .3 .3 V V V 5.326,001 to 33,000 4.3�� 4.0 .3 .3 S V V 9.133,001 to 40,000 1.7�� 1.4 .2 .2 .1 V V 12.740,001 to 50,000 4.2�� 3.8 .5 .2 .3 V V 5.5

50,001 to 60,000 2.1�� 1.7 .4 S .3 V V 8.060,001 to 80,000 3.5�� .5 3.0 .4 2.5 S V 5.480,001 to 100,000 1.0�� .1 .9 .3 .6 .1 V 10.7100,001 to 130,000 .6�� S .6 S .2 .3 V 14.2130,001 or more S�� V S V S V V S

TOTAL LENGTH (FEET)

Less than 20.0 347.7�� 347.7 V V V V V 2.420.0 to 27.9 71.0�� 67.3 3.7 3.7 V V V 9.328.0 to 35.9 27.1�� 21.6 5.5 5.5 S V V 15.836.0 to 40.9 16.9�� 14.7 S S .1 V V 21.441.0 to 44.9 4.9�� .2 4.8 4.6 .1 V V 39.6

45.0 to 49.9 1.0�� .3 .7 .4 .3 V V 16.450.0 to 54.9 1.0�� .1 .9 .3 .7 V V 12.755.0 to 59.9 1.1�� V 1.1 .2 .9 V V 10.560.0 to 64.9 1.3�� V 1.3 .2 1.1 V V 10.165.0 to 69.9 .7�� V .7 .1 .6 S V 13.2

70.0 to 74.9 .2�� V .2 S .2 S V 23.075.0 to 79.9 .2�� V .2 S .1 .1 V 25.580.0 or more .4�� V .4 .1 V .3 V 18.2

MILES PER GALLON

Less than 5 5.6�� 3.7 1.9 .4 1.2 .3 V 6.15 to 6.9 9.9�� 7.3 2.6 .7 1.8 .1 V 4.87 to 8.9 6.7�� 6.2 .5 .3 .2 V V 6.89 to 10.9 52.4�� 49.5 S S S V V 11.711 to 12.9 53.8�� 51.8 S S S V V 11.913 to 14.9 47.7�� 46.8 S S S V V 12.815 or more 237.8�� 230.8 7.0 7.0 V V V 4.1

15 to 20.9 184.0�� 177.9 6.2 6.2 V V V 5.321 to 24.9 35.1�� 34.2 S S V V V 15.225 or more 18.7�� 18.7 V V V V V 21.4

Not reported 42.8�� 38.9 3.9 3.1 .7 S V 12.8Not applicable2 16.8�� 16.8 V V V V V 21.6





Truck type

Combination

Total




trailer


trailer


trailers


trailers


total(percent)

MODEL YEAR

2003 V�� V V V V V V N2002 S�� S V V V V V S2001 15.8�� 14.7 S S S S V 23.02000 28.0�� 27.8 .2 S S S V 17.01999 27.5�� 27.3 .2 S .1 V V 17.3

1998 20.9�� 20.9 S V S V V 20.01997 19.3�� 18.3 S S .1 S V 20.71996 19.5�� 16.5 S S .2 S V 20.61995 25.6�� 23.7 S S .1 S V 17.91994 29.3�� 28.2 S S .1 S V 16.61993 23.2�� 22.9 .3 S .2 S V 18.7Pre�1993 262.6�� 249.7 12.9 9.5 3.1 .2 V 3.8

VEHICLE ACQUISITION

New 134.9�� 128.8 6.1 5.8 .3 .1 V 6.7Used 323.0�� 307.9 15.1 11.2 3.5 .4 V 2.9Not reported 15.5�� 15.2 .3 S .2 S V 22.7


Leased 8.1�� 7.9 .2 .1 .2 V V 31.2Lessee 7.0�� 6.9 .1 S .1 V V 33.9

Vehicle only .7�� .6 .1 S .1 V V 20.7Vehicle with driver V�� V V V V V V NNot reported S�� S V V V V V SNot applicable4 6.3�� 6.3 V V V V V 37.5

Lessor S�� S .1 S S V V SVehicle only .1�� .1 .1 S S V V 33.9Vehicle with driver .1�� S S S S V V 48.0Not reported V�� V V V V V V NNot applicable4 S�� S V V V V V S

Not reported S�� S V V V V V SNot leased 254.3�� 244.1 10.2 7.6 2.3 .4 V 3.9Not reported 211.1�� 199.9 11.1 9.5 1.6 .1 V 4.7

Length of leasing agreement:Leased 8.1�� 7.9 .2 .1 .2 V V 31.2

1 to 11 months .1�� S S V S V V 48.012 months or more .8�� .7 .2 .1 .1 V V 17.9Not reported S�� S V V V V V SNot applicable4 7.2�� 7.2 V V V V V 35.1

Provisions of lease5:Financing only .7�� .6 .1 S .1 V V 19.8Full maintenance .2�� .1 .1 S S V V 31.8Payment of taxes .1�� .1 S S V V V 30.3Obtaining licenses and permits .3�� .2 .1 S S V V 31.0Recordkeeping .3�� .2 .1 S S V V 33.5Fuel contract .1�� S .1 S S V V 33.9

PRIMARY OPERATOR CLASSIFICATION

Private 115.4�� 106.5 8.9 5.4 3.2 .3 V 6.7Motor carrier 3.8�� 3.3 .5 S .3 .1 V 34.7Owner operator 2.1�� .6 S S .5 S V 42.3Rental S�� S S S S V V SPersonal transportation 333.4�� 322.8 10.6 10.6 V V V 2.6Not applicable2 16.8�� 16.8 V V V V V 21.6


Contract 1.0�� .5 .5 .1 .3 .1 V 15.1Common 1.7�� 1.2 .5 .1 .4 S V 12.8Not reported .5�� .4 .2 S .1 S V 22.6Not applicable6 470.3�� 449.9 20.4 16.9 3.2 .3 V .7

Type of service:Truckload 1.8�� .9 1.0 .2 .6 .1 V 10.3Less�than truckload .8�� .7 .1 V .1 V V 21.5Not reported .5�� .4 .1 S .1 S V 23.1Not applicable6 470.3�� 449.9 20.4 16.9 3.2 .3 V .7

Source of hauls:Shippers or receivers 1.8�� 1.1 .6 .1 .5 .1 V 12.3Brokers S�� V S V S V V SCentralized markets or exchanges S�� S S S S V V SOther V�� V V V V V V NNot reported 1.3�� .8 .5 .1 .3 S V 14.0Not applicable6 470.3�� 449.9 20.4 16.9 3.2 .3 V .7


Carrying hazardous materials 1.2�� 1.0 .3 S .1 S V 16.7Not carrying hazardous materials 31.1�� 25.1 6.0 2.0 3.7 .3 V 1.6Not reported 2.3�� 2.0 .3 S .2 .1 V 11.4Not applicable8 438.8�� 423.8 15.0 15.0 S V V .7

EQUIPMENT TYPE5 9

Aerial work platform/bucket 1.0�� .9 S S V V V 20.9Air bag(s) (safety device only) 159.2�� 152.7 6.5 6.3 .1 S V 5.9Air compressor (except air brakes) 1.8�� 1.3 .4 .1 .3 .1 V 12.3Air�conditioning 284.6�� 271.8 12.8 10.2 2.3 .4 V 3.3Air springs 2.3�� .6 1.7 .2 1.3 .2 V 7.5





Truck type

Combination

Total




trailer


trailer


trailers


trailers


total(percent)


Antilock brake system 192.3�� 183.7 8.6 8.1 .4 .1 V 5.0Collision warning system .3�� .2 .1 S S S V 36.7Computerized drive train control unit 45.3�� 44.2 S S .1 S V 13.2Crane .7�� .6 .1 S S V V 21.4Electronic vehicle identification device S�� S S V S V V S

Engine retarder/brake 6.4�� 2.7 3.7 .6 2.7 .4 V 3.6Front�wheel drive 286.3�� 277.5 8.8 8.8 V V V 3.3Hoist 14.4�� 13.8 .7 .7 V V V 3.9Idle�reducing technology (portable auxiliary pack, electrification, etc.) .3� .2 .1 S .1 S V 32.1Internet access V�� V V V V V V N

Lift gate 1.5�� 1.5 S S V V V 15.5Mounting bar for snowplow 5.6�� 4.7 S S V V V 38.8Navigational system V�� V V V V V V NPower take�off 15.4�� 13.8 1.6 .8 .8 .1 V 3.6Radial tires 317.2�� 301.1 16.1 12.9 2.8 .4 V 2.9

Reflective material in addition to those required by law 3.0�� 2.2 .8 .3 .5 S V 9.3Road speed governor 5.1�� 3.9 1.2 .3 .8 .1 V 7.2Toolbox 67.3�� 59.2 8.2 6.8 1.1 .2 V 9.6Trip recorder or on�board computer with communication capabilities 8.4�� 7.5 S S S V V 31.8Trip recorder or on�board computer without communicationcapabilities 59.2�� 57.4 S S .1 S V 11.4

Vehicle control aids for handicapped drivers V�� V V V V V V NWheelchair lift S�� S V V V V V SWinch 11.3�� 11.1 .2 .2 .1 V V 25.6

Transmission type:Automatic 272.0�� 262.8 9.2 9.2 S V V 3.4Manual 191.8�� 179.8 12.1 7.9 3.7 .4 V 4.7Semiautomated manual .2�� .2 .1 S S S V 33.2Automated manual S�� S V V V V V SNot reported 8.4�� 8.2 .3 S .2 S V 29.7

Braking system:Hydraulic (standard) 12.6�� 12.0 .6 .5 S V V 4.3Hydraulic with power assist 8.4�� 7.9 .5 .5 S V V 6.0Air 13.9�� 8.6 5.3 1.1 3.8 .4 V 2.8Other V�� V V V V V V NNot reported 1.6�� 1.4 .2 V .2 S V 13.9Not applicable10 436.9�� 422.0 15.0 15.0 V V V .7


Fuel type:Gasoline 409.4�� 397.9 11.5 11.4 S V V 1.6Diesel 42.3�� 32.3 10.1 5.7 4.0 .4 V 11.0Natural gas V�� V V V V V V NPropane S�� S V V V V V SAlcohol fuels V�� V V V V V V N

Electricity V�� V V V V V V NCombination 3.7�� 3.7 V V V V V 48.1Other V�� V V V V V V NNot reported S�� S S V S V V SNot applicable2 16.8�� 16.8 V V V V V 21.6

Cylinders11:4 cylinders 47.2�� 47.2 V V V V V 12.86 cylinders 143.4�� 135.8 7.7 4.4 2.9 .4 V 6.18 cylinders 256.4�� 244.2 12.3 12.2 .1 S V 3.8Other 26.4�� 24.7 1.7 .6 1.1 S V 13.0

Cubic inch displacement11:Gasoline fuel 409.4�� 397.9 11.5 11.4 S V V 1.6

Less than 200 69.4�� 69.4 V V V V V 10.4200 to 299 89.0�� 87.2 S S V V V 8.3300 to 349 68.7�� 68.7 V V V V V 10.4350 to 399 124.4�� 118.8 5.6 5.6 V V V 7.0400 or more 33.6�� 30.6 S S V V V 15.0Not available 24.4�� 23.2 S S S V V 14.0

Diesel fuel 42.3�� 32.3 10.1 5.7 4.0 .4 V 11.0Less than 400 16.7�� 13.9 S S V V V 21.4400 to 599 13.9�� 11.7 S S .1 S V 21.6600 to 799 1.9�� 1.4 .5 .1 .4 S V 9.6800 or more 4.5�� 1.5 3.0 .4 2.3 .3 V 4.2Not available 5.3�� 3.7 1.6 .4 1.1 .1 V 17.1

Other fuel 4.9�� 4.9 V V V V V 40.7Less than 400 3.8�� 3.8 V V V V V 47.5400 or more S�� S V V V V V SNot available S�� S V V V V V S

Not reported S�� S S V S V V SNot applicable2 16.8�� 16.8 V V V V V 21.6

REFUELING LOCATION

Gas station 383.4�� 369.3 14.2 12.7 1.4 S V 2.0Truck stop 12.8�� 10.1 2.7 S 1.3 .2 V 21.7Own facility (including home, farm, ranch, onsite by mobile supplier,etc.) 42.3�� 39.0 3.3 S 1.0 .2 V 11.4

Other company’s/contractor’s facility not open to the public 3.4�� 3.1 .3 S .1 S V 45.1Other V�� V V V V V V NNot reported 14.8�� 13.7 S S .2 S V 22.9Not applicable2 16.8�� 16.8 V V V V V 21.6





Truck type

Combination

Total




trailer


trailer


trailers


trailers


total(percent)

MAINTENANCE5

General maintenance performed by:None performed 13.5�� 13.4 .1 V .1 V V 24.0Company�owned maintenance facility 35.7�� 31.8 4.0 S 1.3 .2 V 13.1General repair business or private mechanic 174.9�� 165.5 9.3 8.4 .8 .1 V 5.5Dealership service department 79.4�� 77.2 S S .3 .1 V 9.5Leasing company S�� S S S V V V S

Individual not employed/paid by any maintenance type facility 213.2�� 204.5 8.7 6.5 2.0 .2 V 4.6Other V�� V V V V V V NNot reported 13.6�� 11.6 S S .2 S V 24.0Not applicable2 16.8�� 16.8 V V V V V 21.6

Extensive repairs performed by:None performed 372.3�� 356.0 16.3 13.1 3.0 .2 V 2.3Company�owned maintenance facility 4.6�� 3.3 S S .2 S V 38.9General repair business or private mechanic 32.0�� 30.5 S S .3 .1 V 15.5Dealership service department 19.6�� 18.4 S S .1 S V 20.5Leasing company V�� V V V V V V N

Component distributorship (engine, transmission, body, etc.) S�� S .2 S .1 S V SIndividual not employed/paid by any repair type facility 20.3�� 19.9 .4 .1 .3 S V 19.7Other V�� V V V V V V NNot reported S�� S V V V V V SNot applicable2 16.8�� 16.8 V V V V V 21.6

AXLE ARRANGEMENT

Driving axles:1 173.8�� 166.3 7.5 7.2 .3 V V 5.42 299.5�� 285.4 14.0 9.9 3.6 .4 V 3.23 or more .1�� .1 S V S V V 31.8Not reported .1�� S .1 V .1 V V 34.0

Total liftable axles and locations12:None 34.9�� 29.0 5.9 2.0 3.6 .4 V 1.01 1.4�� .8 .6 .2 .4 .1 V 8.9

Forward of the drive axle 1.1�� .6 .5 .1 .3 .1 V 10.3Below the chassis .1�� .1 S S S V V 36.3Beyond the chassis .1�� .1 V V V V V 39.1Not reported .2�� .1 .1 S S S V 27.7

2 or more .1�� .1 S S V V V 39.1Forward of the drive axle .1�� .1 S S V V V 39.1Below the chassis .1�� S S S V V V 48.0Beyond the chassis .1�� .1 V V V V V 48.0Not reported V�� V V V V V V N

Not reported .1�� S .1 V .1 V V 36.3Not applicable10 436.9�� 422.0 15.0 15.0 V V V .7

Total liftable axles and number of braking axles:None 34.9�� 29.0 5.9 2.0 3.6 .4 V 1.01 1.4�� .8 .6 .2 .4 .1 V 8.9

0 braking .2�� .2 .1 S S V V 22.51 braking 1.2�� .6 .6 .2 .3 .1 V 10.0Not reported S�� S V V V V V S

2 or more .1�� .1 S S V V V 39.10 braking V�� V V V V V V N1 braking V�� V V V V V V N2 or more braking .1�� .1 S S V V V 39.1Not reported V�� V V V V V V N

Not reported .1�� S .1 V .1 V V 36.3Not applicable10 436.9�� 422.0 15.0 15.0 V V V .7

CAB TYPE

Conventional cab 32.8�� 27.0 5.7 2.1 3.2 .4 V 1.3With sleeper 1.8�� .1 1.7 V 1.4 .3 V 7.5Without sleeper 30.9�� 26.9 3.9 2.1 1.7 .1 V 1.4Not reported .1�� S .1 V .1 S V 30.3

Cab over engine 3.6�� 2.7 .9 .1 .8 S V 8.0With sleeper .7�� S .7 V .7 S V 13.9Without sleeper 2.9�� 2.7 .2 .1 .1 S V 9.6Not reported S�� S S V S V V S

Cab forward of engine .1�� .1 V V V V V 48.1Cab beside engine S�� S V V V V V SNot reported S�� S S V S V V SNot applicable10 436.9�� 422.0 15.0 15.0 V V V .7


1Comparability of estimates may vary across survey years due to changes in category definitions.2Vehicles not in use. When the respondent had partial�year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent.3Truck�tractors not in use.4Lessees or lessors of pickups, minivans, other light vans, and sport utilities.5Detail lines do not add to total trucks because items were not applicable or multiple responses were possible.6Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are private, rental, or used for personal transportation; and vehicles not in use.7Distributed miles data are available in Table 8.8Includes pickups, minivans, other light vans, and sport utilities; all other vehicles that are rental or used for personal transportation; and vehicles not in use.9Pickups, minivans, other light vans, and sport utilites, in the Equipment Type section, were only required to report for aerial work platform/bucket, air bag(s), air�conditioning, antilock brake






Table 6. Truck Miles by Vehicle Size: 2002[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]




(percent)

Total 4 465.6�� 4 148.6 125.7 36.9 154.4 XCoefficient of variation (percent) 4.7�� 5.0 28.3 14.2 5.4 X

BUSINESS1

For�hire transportation or warehousing S�� S 11.9 S 17.5 SVehicle leasing or rental S�� S S V S SAgriculture, forestry, fishing, or hunting 286.9�� 198.5 S 10.4 56.4 15.0Mining 4.3�� V S S 2.7 29.5Utilities 106.4�� 90.2 5.1 2.1 8.9 34.6

Construction 302.6�� 237.2 S 3.7 29.8 23.8Manufacturing S�� S S S S SWholesale trade S�� S 1.5 4.8 10.9 SRetail trade 143.3�� 118.4 7.0 S 11.1 30.6Information services S�� S V V S S

Waste management, landscaping, or administrative/support services 14.3�� S .8 S 7.6 24.4Arts, entertainment, or recreation services S�� S S S S SAccommodation or food services S�� S S V S SOther services 130.9�� 124.3 S S 2.4 32.9Personal transportation 3 214.2�� 3 175.1 S V S 6.3Not reported S�� S S S 4.0 SNot applicable2 S�� S V V S S

BODY TYPESingle�unit trucks 4 395.3�� 4 148.6 125.7 36.9 84.0 4.8

Pickup 2 420.4�� 2 342.7 77.7 V V 5.4Minivan 453.0�� 453.0 V V V 24.6Other light vans 271.1�� 271.1 V V V 31.5Sport utility 1 065.9�� 1 065.9 V V V 12.3Armored S�� V V V S S

Beverage S�� V V V S SConcrete mixer 3.4�� V V V 3.4 22.3Concrete pumper S�� V V S S SCrane S�� V S V S SCurtainside S�� V V S V S

Dump 24.5�� V 3.9 3.7 16.9 10.4Flatbed, stake, or platform 45.6�� 4.6 14.4 11.1 15.5 11.8Low boy S�� V V V S SPole, logging, pulpwood, or pipe 7.3�� V V V 7.3 30.4Service, utility 19.7�� S 6.3 5.1 5.9 19.7

Service, other 5.6�� S .6 S S 32.9Street sweeper S�� V V V S STank, dry bulk .9�� V V S .8 32.3Tank, liquids or gases 14.0�� V S S 11.3 23.7Tow/Wrecker 2.8�� V S S S 40.2

Trash, garbage, or recycling 7.7�� V S S 6.3 27.8Vacuum S�� V V S S SVan, basic enclosed 7.0�� S 3.1 .8 2.1 20.6Van, insulated nonrefrigerated S�� V V S V SVan, insulated refrigerated 4.9�� S S S S 38.3

Van, open top 11.7�� V .5 3.6 7.6 11.2Van, step, walk�in, or multistop 18.9�� 4.2 13.7 S S 26.2Van, other S�� S S S S SOther V�� V V V V N

Truck�tractors 70.3�� V V V 70.3 8.2Automobile carrier V�� V V V V NBeverage S�� V V V S SCurtainside V�� V V V V NDump 11.6�� V V V 11.6 17.9Flatbed, stake, or platform 11.5�� V V V 11.5 21.2

Livestock 3.5�� V V V 3.5 38.2Low boy 4.9�� V V V 4.9 24.2Mobile home toter S�� V V V S SOpen top 10.9�� V V V 10.9 20.8Pole, logging, pulpwood, or pipe 10.2�� V V V 10.2 27.6

Tank, dry bulk 4.7�� V V V 4.7 42.5Tank, liquids or gases 4.1�� V V V 4.1 38.7Van, basic enclosed 5.0�� V V V 5.0 33.4Van, drop�frame S�� V V V S SVan, insulated nonrefrigerated V�� V V V V N

Van, insulated refrigerated S�� V V V S SOther V�� V V V V NNot applicable3 V�� V V V V N

ANNUAL MILESLess than 5,000 282.4�� 246.6 9.4 9.3 17.1 8.05,000 to 9,999 716.0�� 680.6 S 6.6 18.1 8.210,000 to 19,999 1 723.8�� 1 662.0 27.7 6.0 28.0 6.920,000 to 29,999 1 032.8�� 929.1 69.3 8.0 26.4 13.230,000 to 49,999 320.4�� 287.4 S S 23.7 29.9

50,000 to 74,999 175.6�� S S S 25.9 47.175,000 or more S�� S V V 15.0 SNot applicable2 S�� S V V S S

PRIMARY RANGE OF OPERATIONOff�the�road 85.9�� 71.3 S 3.6 9.0 29.750 miles or less 2 867.3�� 2 717.4 60.4 21.7 67.8 5.551 to 100 miles 607.7�� 527.4 S 4.9 37.2 21.0101 to 200 miles 232.5�� 214.8 S S 14.7 26.0201 to 500 miles 106.5�� 94.0 S S 9.6 39.0

501 miles or more 211.9�� 191.4 S V S 31.2Not reported 344.9�� 323.5 5.0 3.4 13.1 31.7Not applicable2 S�� S V V S S



Table 6. Truck Miles by Vehicle Size: 2002�Con.[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]




(percent)

PRIMARY JURISDICTIONOperated in Canada V�� V V V V NOperated in Mexico V�� V V V V NOperated within the home base state 4 064.0�� 3 785.0 105.3 34.3 139.4 5.1Operated in states other than the home base state 217.2�� 191.1 S S 7.8 32.9Not reported 175.6�� 163.8 2.8 2.0 7.1 26.6Not applicable2 S�� S V V S S

MONTHS OPERATED12 3 599.0�� 3 399.2 108.7 20.8 70.2 6.17 to 11 527.5�� 468.6 4.7 6.5 47.7 13.42 to 6 313.8�� 263.1 S 6.8 32.7 15.11 or less 16.6�� 9.1 1.2 2.8 3.6 18.2Vehicle not used S�� S V V S S

AVERAGE WEIGHT (POUNDS)Less than 6,001 2 708.9�� 2 708.9 N N N 7.56,001 to 8,500 1 046.9�� 1 046.9 N N N 10.38,501 to 10,000 392.8�� 392.8 N N N 21.210,001 to 14,000 87.5�� N 87.5 N N 37.814,001 to 16,000 S�� N S N N S

16,001 to 19,500 17.3�� N 17.3 N N 37.419,501 to 26,000 36.9�� N N 36.9 N 14.226,001 to 33,000 26.7�� N N N 26.7 19.033,001 to 40,000 6.9�� N N N 6.9 25.240,001 to 50,000 21.9�� N N N 21.9 9.4

50,001 to 60,000 15.9�� N N N 15.9 12.660,001 to 80,000 42.9�� N N N 42.9 10.280,001 to 100,000 17.1�� N N N 17.1 16.0100,001 to 130,000 22.7�� N N N 22.7 18.8130,001 or more S�� N N N S S

TOTAL LENGTH (FEET)Less than 20.0 3 148.6�� 3 114.9 20.1 6.2 7.3 5.920.0 to 27.9 691.2�� 596.4 S 20.9 30.5 17.228.0 to 35.9 306.3�� 241.5 S S 24.1 23.736.0 to 40.9 197.4�� 184.4 S S 8.1 31.741.0 to 44.9 S�� S S S 2.5 S

45.0 to 49.9 6.8�� V S S 5.7 20.150.0 to 54.9 9.2�� V V S 9.1 19.955.0 to 59.9 13.9�� V V S 13.6 18.760.0 to 64.9 19.1�� V V V 19.1 15.565.0 to 69.9 8.9�� V V V 8.9 22.1

70.0 to 74.9 5.4�� V V V 5.4 32.775.0 to 79.9 7.2�� V V V 7.2 34.680.0 or more 12.8�� V V V 12.8 25.3

MILES PER GALLONLess than 5 51.2�� V .6 3.5 47.0 9.65 to 6.9 71.7�� S 1.9 8.5 60.3 7.87 to 8.9 42.2�� 4.7 8.3 11.3 17.9 14.19 to 10.9 347.0�� 313.8 23.4 4.5 S 16.611 to 12.9 385.5�� 355.7 S S 2.6 17.213 to 14.9 475.4�� 466.0 7.1 S S 16.315 or more 2 731.2�� 2 678.4 S S S 7.6

15 to 20.9 2 031.8�� 1 979.0 S S S 8.721 to 24.9 478.0�� 478.0 V V V 25.125 or more 221.4�� 221.4 V V V 28.8

Not reported 352.6�� 320.5 8.8 4.3 19.0 21.6Not applicable2 S�� S V V S S

MODEL YEAR2003 V�� V V V V N2002 S�� S V V S S2001 236.3�� 204.7 S S 7.0 25.02000 460.3�� 440.4 S S 14.9 20.51999 393.6�� 361.5 S S 7.3 19.3

1998 284.6�� 277.7 S S 2.4 22.41997 295.6�� 284.7 S S 7.0 27.41996 379.6�� 347.5 S S 10.0 30.11995 318.6�� 298.1 S S 6.4 21.61994 383.6�� 368.7 S S 10.2 30.21993 250.9�� 239.3 S 3.6 6.6 20.9Pre�1993 1 453.6�� 1 317.4 28.7 25.1 82.4 7.5

VEHICLE ACQUISITIONNew 1 446.9�� 1 310.3 73.2 13.6 49.9 9.3Used 2 827.2�� 2 654.0 50.6 22.0 100.5 7.1Not reported 191.5�� 184.3 S 1.3 4.0 29.8

LEASE CHARACTERISTICSLeased 117.6�� 100.3 5.3 S 11.7 31.3

Lessee 96.8�� 82.8 5.2 S 8.5 33.5Vehicle only 14.6�� S 5.2 S 8.4 22.7Vehicle with driver V�� V V V V NNot reported S�� V V V S SNot applicable4 82.1�� 82.1 V V V 39.3

Lessor S�� S S V 3.2 SVehicle only .8�� V S V .8 39.2Vehicle with driver S�� V V V S SNot reported V�� V V V V NNot applicable4 S�� S V V V S

Not reported S�� V V S S SNot leased 2 425.5�� 2 272.9 34.3 19.3 99.0 8.1Not reported 1 922.6�� 1 775.4 86.1 17.3 43.7 7.8







(percent)

LEASE CHARACTERISTICS�Con.Length of leasing agreement:

Leased 117.6�� 100.3 5.3 S 11.7 31.31 to 11 months S�� V V V S S12 months or more 17.3�� S 5.3 S 11.0 21.0Not reported S�� V V S V SNot applicable4 99.5�� 99.5 V V V 36.8

Provisions of lease5:Financing only 15.4�� S 5.3 S 9.1 21.9Full maintenance 3.0�� V S S 1.1 44.5Payment of taxes 1.4�� V S V 1.3 41.0Obtaining licenses and permits 5.2�� S S V S 37.3Recordkeeping 4.4�� S S V S 42.6Fuel contract S�� V S V S S

PRIMARY OPERATOR CLASSIFICATIONPrivate 1 080.0�� 877.9 67.1 33.4 101.6 10.4Motor carrier S�� S 11.8 3.3 25.4 SOwner operator 33.3�� V S S 26.3 21.2Rental S�� S S V .9 SPersonal transportation 3 214.2�� 3 175.1 S V S 6.3Not applicable2 S�� S V V S S


Contract 29.3�� V S S 25.5 17.4Common 31.1�� V 9.5 S 20.3 16.9Not reported 7.7�� V S S 5.9 28.8Not applicable6 4 397.5�� 4 148.6 112.8 33.4 102.6 4.7

Type of service:Truckload 43.4�� V 1.6 S 40.5 12.5Less�than truckload 17.0�� V 11.1 S 5.4 28.5Not reported 7.7�� V S S 5.9 28.8Not applicable6 4 397.5�� 4 148.6 112.8 33.4 102.6 4.7

Source of hauls:Shippers or receivers 46.2�� V 11.2 S 33.5 14.5Brokers S�� V V V S SCentralized markets or exchanges S�� V S S S SOther V�� V V V V NNot reported 17.9�� V 1.2 S 14.8 17.5Not applicable6 4 397.5�� 4 148.6 112.8 33.4 102.6 4.7


Carrying hazardous materials 17.8�� S S S 14.6 21.1Not carrying hazardous materials 221.2�� 12.5 44.4 33.2 131.0 4.8Not reported 13.9�� S S 2.0 7.8 18.1Not applicable8 4 212.7�� 4 133.2 78.5 V 1.0 5.0

EQUIPMENT TYPE5 9

Aerial work platform/bucket 5.0�� S 2.7 1.2 1.1 28.4Air bag(s) (safety device only) 2 242.3�� 2 166.9 60.9 S 14.2 8.8Air compressor (except air brakes) 20.6�� S S S 15.6 17.8Air�conditioning 3 451.2�� 3 282.2 66.4 5.3 97.3 6.1Air springs 38.2�� V V S 38.1 12.1

Antilock brake system 2 636.7�� 2 521.3 81.9 1.5 31.9 7.8Collision warning system 6.5�� V S S S 39.2Computerized drive train control unit 575.6�� 570.6 S V 3.8 15.6Crane 6.0�� S V S 3.6 29.8Electronic vehicle identification device S�� V V V S S

Engine retarder/brake 86.1�� S 1.2 .9 83.9 7.5Front�wheel drive 2 802.5�� 2 730.8 71.7 V V 5.9Hoist 44.6�� S 7.3 9.1 28.1 9.5Idle�reducing technology (portable auxiliary pack, electrification, etc.) 6.2�� V S S 4.6 38.1Internet access V�� V V V V N

Lift gate 13.7�� S S 3.9 6.1 26.1Mounting bar for snowplow 26.7�� 25.9 S S S 46.7Navigational system V�� V V V V NPower take�off 84.6�� S 6.0 14.2 64.2 7.4Radial tires 3 120.6�� 2 866.4 115.8 20.4 118.1 5.9

Reflective material in addition to those required by law 32.2�� S 6.7 S 23.1 14.1Road speed governor 58.8�� S 11.9 3.5 42.0 11.5Toolbox 737.8�� 597.0 70.7 12.2 57.9 13.6Trip recorder or on�board computer with communication capabilities 93.1�� 83.4 S S S 34.0Trip recorder or on�board computer without communication capabilities 677.1�� 646.1 S V 9.8 13.9

Vehicle control aids for handicapped drivers V�� V V V V NWheelchair lift S�� S V V V SWinch 157.7�� 147.5 2.6 S 5.6 38.8

Transmission type:Automatic 3 161.7�� 3 090.4 55.6 S 11.5 6.7Manual 1 199.5�� 964.5 68.6 31.6 134.8 7.9Semiautomated manual S�� V V S S SAutomated manual S�� S V V S SNot reported 87.6�� 79.3 S 1.1 5.7 37.4

Braking system:Hydraulic (standard) 67.1�� 11.9 22.5 21.6 11.1 11.4Hydraulic with power assist 39.1�� 3.6 18.8 7.9 8.8 12.0Air 134.1�� S 1.8 5.8 126.3 5.6Other V�� V V V V NNot reported 14.9�� S 4.8 1.6 8.2 19.7Not applicable10 4 210.4�� 4 132.6 77.7 V V 5.0







(percent)

FUEL TYPE AND ENGINE SIZEFuel type:

Gasoline 3 890.0�� 3 804.5 53.9 17.6 13.9 5.3Diesel 540.9�� 311.1 71.7 19.1 139.1 14.8Natural gas V�� V V V V NPropane S�� S S S S SAlcohol fuels V�� V V V V N

Electricity V�� V V V V NCombination S�� S V S V SOther V�� V V V V NNot reported S�� V V V S SNot applicable2 S�� S V V S S

Cylinders11:4 cylinders 367.9�� 363.5 2.3 S 1.7 17.66 cylinders 1 630.5�� 1 481.6 17.2 15.1 116.6 10.98 cylinders 2 346.9�� 2 214.3 101.9 14.7 15.9 6.7Other 120.3�� 89.2 4.2 6.8 20.1 26.6

Cubic inch displacement11:Gasoline fuel 3 890.0�� 3 804.5 53.9 17.6 13.9 5.3

Less than 200 702.9�� 702.8 S V V 17.9200 to 299 1 089.9�� 1 086.7 S V V 13.7300 to 349 599.9�� 594.8 S S S 13.4350 to 399 1 157.9�� 1 117.9 S 6.6 5.3 10.4400 or more 285.1�� 264.9 14.1 3.1 3.0 23.5Not available 54.2�� 37.4 3.6 7.8 5.4 27.0

Diesel fuel 540.9�� 311.1 71.7 19.1 139.1 14.8Less than 400 171.7�� 150.4 10.6 S 5.0 26.7400 to 599 253.8�� 160.6 60.9 10.5 21.8 26.2600 to 799 18.9�� S S S 17.4 12.6800 or more 72.2�� V S V 72.2 8.2Not available 24.2�� S S 1.4 22.7 11.2

Other fuel S�� S S S S SLess than 400 S�� S S S V S400 or more S�� S V S S SNot available S�� V V S S S

Not reported S�� V V V S SNot applicable2 S�� S V V S S

REFUELING LOCATIONGas station 3 881.7�� 3 765.1 49.2 19.1 48.3 5.5Truck stop 173.9�� 83.2 S S 43.1 25.9Own facility (including home, farm, ranch, onsite by mobile supplier, etc.) 247.5�� 160.8 31.6 10.2 44.9 17.5Other company’s/contractor’s facility not open to the public 37.4�� S S S 11.6 49.2Other V�� V V V V NNot reported 116.3�� 107.1 S S 6.4 30.1Not applicable2 S�� S V V S S

MAINTENANCE5

General maintenance performed by:None performed 30.8�� 27.9 1.3 S S 40.3Company�owned maintenance facility 456.9�� 350.3 25.5 13.9 67.3 17.6General repair business or private mechanic 2 075.8�� 1 928.1 87.0 13.1 47.6 9.6Dealership service department 1 056.1�� 1 034.1 3.4 S 18.0 11.6Leasing company S�� S V S S S

Individual not employed/paid by any maintenance type facility 1 757.8�� 1 659.1 S 9.0 53.3 7.7Other V�� V V V V NNot reported 102.2�� 92.6 S S 6.5 32.8Not applicable2 S�� S V V S S

Extensive repairs performed by:None performed 3 465.0�� 3 259.2 71.2 29.5 105.1 5.9Company�owned maintenance facility 66.6�� S S S 11.4 47.7General repair business or private mechanic 451.0�� 390.6 S 3.2 16.5 20.2Dealership service department 324.0�� 307.9 3.6 1.3 11.3 24.2Leasing company V�� V V V V N

Component distributorship (engine, transmission, body, etc.) 7.8�� S S V 4.5 35.8Individual not employed/paid by any repair type facility 187.1�� 154.1 S 1.3 9.2 25.4Other V�� V V V V NNot reported S�� S V V V SNot applicable2 S�� S V V S S

TRUCK TYPE AND AXLE ARRANGEMENTSingle�unit trucks and truck�tractors without trailer 4 267.4�� 4 077.2 85.6 35.8 68.8 4.9

2 axles 4 230.0�� 4 077.2 85.6 35.5 31.7 4.93 axles 27.5�� S S S 27.3 7.74 axles 9.0�� V V V 9.0 18.85 axles or more .7�� V V V .7 48.3Not reported S�� V V V S S

Combinations 198.2�� 71.4 S S 85.6 18.3Single�unit trucks with trailer 127.9�� 71.4 S S 15.2 27.9

3 axles S�� S S S S S4 axles 64.7�� 28.5 S V 1.9 38.25 axles or more 13.8�� S V S 13.0 19.2Not reported S�� V S S S S

Truck�tractors with single trailer 53.3�� V V V 53.3 8.73 axles S�� V V V S S4 axles 1.2�� V V V 1.2 43.45 axles or more 48.8�� V V V 48.8 9.3Not reported 2.0�� V V V 2.0 34.8

Truck�tractors with double trailers 17.1�� V V V 17.1 22.65 axles V�� V V V V N6 axles V�� V V V V N7 axles 5.3�� V V V 5.3 39.48 axles or more 11.7�� V V V 11.7 27.9Not reported S�� V V V S S







(percent)

TRUCK TYPE AND AXLE ARRANGEMENT�Con.Combinations�Con.

Truck�tractors with triple trailers V�� V V V V N7 axles V�� V V V V N8 axles V�� V V V V N9 axles V�� V V V V N10 axles or more V�� V V V V NNot reported V�� V V V V N

Driving axles:1 1 523.2�� 1 414.4 41.4 34.8 32.6 11.72 2 940.7�� 2 734.3 84.2 2.1 120.0 5.73 or more 1.3�� V V V 1.3 37.0Not reported .5�� V V V .5 37.8

Total liftable axles and locations12:None 230.2�� 16.0 48.0 36.9 129.3 4.71 23.4�� V V V 23.4 14.2

Forward of the drive axle 17.5�� V V V 17.5 15.8Below the chassis S�� V V V S SBeyond the chassis .9�� V V V .9 45.5Not reported 3.6�� V V V 3.6 48.3

2 or more 1.0�� V V V 1.0 43.8Forward of the drive axle 1.0�� V V V 1.0 43.8Below the chassis S�� V V V S SBeyond the chassis S�� V V V S SNot reported V�� V V V V N

Not reported .6�� V V V .6 44.1Not applicable10 4 210.4�� 4 132.6 77.7 V V 5.0

Total liftable axles and number of braking axles:None 230.2�� 16.0 48.0 36.9 129.3 4.71 23.4�� V V V 23.4 14.2

0 braking 3.0�� V V V 3.0 35.51 braking 19.6�� V V V 19.6 15.8Not reported S�� V V V S S

2 or more 1.0�� V V V 1.0 43.80 braking V�� V V V V N1 braking V�� V V V V N2 or more braking 1.0�� V V V 1.0 43.8Not reported V�� V V V V N

Not reported .6�� V V V .6 44.1Not applicable10 4 210.4�� 4 132.6 77.7 V V 5.0

CAB TYPEConventional cab 221.2�� 15.2 30.5 34.8 140.7 4.7

With sleeper 27.1�� V V V 27.1 13.2Without sleeper 193.1�� 15.2 30.5 34.8 112.7 5.1Not reported 1.0�� V V V 1.0 45.1

Cab over engine 33.3�� S 17.4 2.1 13.0 15.8With sleeper 2.8�� V V V 2.8 20.2Without sleeper 30.5�� S 17.4 2.1 10.1 17.2Not reported S�� V V V S S

Cab forward of engine S�� V V V S SCab beside engine S�� V V V S SNot reported S�� V S V S SNot applicable10 4 210.4�� 4 132.6 77.7 V V 5.0








Table 7. Truck Miles by Truck Type: 2002[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]


Truck type

Combination

Total




trailer


trailer


trailers


trailers


total(percent)

Total 4 465.6�� 4 267.4 198.2 127.9 53.3 17.1 V XCoefficient of variation (percent) 4.7�� 4.9 18.3 27.9 8.7 22.6 N X

BUSINESS1

For�hire transportation or warehousing S�� S 15.8 S 8.4 6.1 V SVehicle leasing or rental S�� S S S S V V SAgriculture, forestry, fishing, or hunting 286.9�� 221.9 65.0 35.2 26.3 3.4 V 15.0Mining 4.3�� 3.5 S V S V V 29.5Utilities 106.4�� 102.0 4.4 1.0 S S V 34.6

Construction 302.6�� 252.6 50.0 S 10.0 3.9 V 23.8Manufacturing S�� S S V S V V SWholesale trade S�� S 3.1 S S V V SRetail trade 143.3�� 140.4 2.9 S 2.7 V V 30.6Information services S�� S S S V V V S

Waste management, landscaping, or administrative/support services 14.3� 12.8 S S S S V 24.4Arts, entertainment, or recreation services S�� S S S V V V SAccommodation or food services S�� S S S V V V SOther services 130.9�� 130.0 S S S V V 32.9Personal transportation 3 214.2�� 3 163.0 51.2 51.2 V V V 6.3Not reported S�� S S V S S V SNot applicable2 S�� S V V V V V S

BODY TYPE

Single�unit trucks 4 395.3�� 4 267.4 127.9 127.9 N N N 4.8Pickup 2 420.4�� 2 314.0 106.4 106.4 N N N 5.4Minivan 453.0�� 453.0 V V N N N 24.6Other light vans 271.1�� 271.1 V V N N N 31.5Sport utility 1 065.9�� 1 065.5 S S N N N 12.3Armored S�� S V V N N N S

Beverage S�� S V V N N N SConcrete mixer 3.4�� 3.4 V V N N N 22.3Concrete pumper S�� S V V N N N SCrane S�� S V V N N N SCurtainside S�� S V V N N N S

Dump 24.5�� 19.0 5.5 5.5 N N N 10.4Flatbed, stake, or platform 45.6�� 40.7 4.9 4.9 N N N 11.8Low boy S�� V S S N N N SPole, logging, pulpwood, or pipe 7.3�� S 6.5 6.5 N N N 30.4Service, utility 19.7�� 18.5 1.2 1.2 N N N 19.7

Service, other 5.6�� 5.1 S S N N N 32.9Street sweeper S�� S V V N N N STank, dry bulk .9�� .7 S S N N N 32.3Tank, liquids or gases 14.0�� 12.9 S S N N N 23.7Tow/Wrecker 2.8�� 2.8 S S N N N 40.2

Trash, garbage, or recycling 7.7�� 7.7 V V N N N 27.8Vacuum S�� S V V N N N SVan, basic enclosed 7.0�� 7.0 V V N N N 20.6Van, insulated nonrefrigerated S�� V S S N N N SVan, insulated refrigerated 4.9�� 4.9 S S N N N 38.3

Van, open top 11.7�� 10.6 1.1 1.1 N N N 11.2Van, step, walk�in, or multistop 18.9�� 18.9 V V N N N 26.2Van, other S�� S S S N N N SOther V�� V V V N N N N

Truck�tractors 70.3�� V 70.3 N 53.3 17.1 V 8.2Automobile carrier V�� N V N V V V NBeverage S�� N S N S V V SCurtainside V�� N V N V V V NDump 11.6�� N 11.6 N 10.2 S V 17.9Flatbed, stake, or platform 11.5�� N 11.5 N 9.4 2.1 V 21.2

Livestock 3.5�� N 3.5 N 3.5 V V 38.2Low boy 4.9�� N 4.9 N 4.9 V V 24.2Mobile home toter S�� N S N S V V SOpen top 10.9�� N 10.9 N 8.2 S V 20.8Pole, logging, pulpwood, or pipe 10.2�� N 10.2 N 9.6 S V 27.6

Tank, dry bulk 4.7�� N 4.7 N .5 4.3 V 42.5Tank, liquids or gases 4.1�� N 4.1 N 1.9 S V 38.7Van, basic enclosed 5.0�� N 5.0 N 3.7 S V 33.4Van, drop�frame S�� N S N S S V SVan, insulated nonrefrigerated V�� N V N V V V N

Van, insulated refrigerated S�� N S N S S V SOther V�� N V N V V V NNot applicable3 V�� V V N V V V N

ANNUAL MILES

Less than 5,000 282.4�� 263.5 18.9 14.6 4.2 S V 8.05,000 to 9,999 716.0�� 681.1 34.9 28.3 6.1 .5 V 8.210,000 to 19,999 1 723.8�� 1 684.4 39.4 S 6.2 S V 6.920,000 to 29,999 1 032.8�� 978.0 S S 9.2 1.3 V 13.230,000 to 49,999 320.4�� 304.0 16.4 2.1 10.1 4.1 V 29.9

50,000 to 74,999 175.6�� S 18.9 4.6 11.6 S V 47.175,000 or more S�� S 15.0 S 5.8 8.2 V SNot applicable2 S�� S V V V V V S



Table 7. Truck Miles by Truck Type: 2002�Con.[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]


Truck type

Combination

Total




trailer


trailer


trailers


trailers


total(percent)


Off�the�road 85.9�� 82.1 3.8 S 2.2 S V 29.750 miles or less 2 867.3�� 2 803.9 63.4 43.0 18.9 S V 5.551 to 100 miles 607.7�� 564.1 43.6 S 15.6 S V 21.0101 to 200 miles 232.5�� 194.3 S S 5.5 4.3 V 26.0201 to 500 miles 106.5�� 97.6 8.9 S 2.8 6.1 V 39.0

501 miles or more 211.9�� 183.9 S S S V V 31.2Not reported 344.9�� 332.7 12.2 S 5.6 S V 31.7Not applicable2 S�� S V V V V V S


Operated in Canada V�� V V V V V V NOperated in Mexico V�� V V V V V V NOperated within the home base state 4 064.0�� 3 895.3 168.7 106.9 47.5 14.3 V 5.1Operated in states other than the home base state 217.2�� 194.2 S S S S V 32.9Not reported 175.6�� 169.1 6.5 S 2.7 S V 26.6Not applicable2 S�� S V V V V V S

MONTHS OPERATED

12 3 599.0�� 3 494.7 104.2 78.9 15.5 9.7 V 6.17 to 11 527.5�� 470.1 57.4 30.6 22.1 4.7 V 13.42 to 6 313.8�� 279.2 34.6 18.2 13.8 2.5 V 15.11 or less 16.6�� 14.6 2.0 .1 1.8 S V 18.2Vehicle not used S�� S V V V V V S

VEHICLE SIZE

Light 4 148.6�� 4 077.2 71.4 71.4 V V V 5.0Medium 125.7�� 85.6 S S V V V 28.3Light�heavy 36.9�� 35.8 S S V V V 14.2Heavy�heavy 154.4�� 68.8 85.6 15.2 53.3 17.1 V 5.4


Less than 6,001 2 708.9�� 2 683.9 S S V V V 7.56,001 to 8,500 1 046.9�� 1 033.9 S S V V V 10.38,501 to 10,000 392.8�� 359.4 S S V V V 21.210,001 to 14,000 87.5�� 66.9 S S V V V 37.814,001 to 16,000 S�� 9.3 S S V V V S

16,001 to 19,500 17.3�� 9.5 S S V V V 37.419,501 to 26,000 36.9�� 35.8 S S V V V 14.226,001 to 33,000 26.7�� 25.7 1.0 .9 S V V 19.033,001 to 40,000 6.9�� 6.1 .8 .6 S V V 25.240,001 to 50,000 21.9�� 18.1 3.8 1.2 2.6 V V 9.4

50,001 to 60,000 15.9�� 11.5 4.4 S 4.1 V V 12.660,001 to 80,000 42.9�� 4.7 38.2 6.6 30.2 S V 10.280,001 to 100,000 17.1�� S 15.9 4.7 10.0 S V 16.0100,001 to 130,000 22.7�� S 21.2 S 5.9 14.4 V 18.8130,001 or more S�� V S V S V V S

TOTAL LENGTH (FEET)

Less than 20.0 3 148.6�� 3 148.6 V V V V V 5.920.0 to 27.9 691.2�� 677.4 S S V V V 17.228.0 to 35.9 306.3�� 246.9 59.4 59.2 S V V 23.736.0 to 40.9 197.4�� 190.2 7.2 S 3.2 V V 31.741.0 to 44.9 S�� 2.1 S S S V V S

45.0 to 49.9 6.8�� 1.5 5.4 2.5 2.9 V V 20.150.0 to 54.9 9.2�� S 8.4 2.9 5.5 V V 19.955.0 to 59.9 13.9�� V 13.9 3.5 10.3 V V 18.760.0 to 64.9 19.1�� V 19.1 2.5 16.6 V V 15.565.0 to 69.9 8.9�� V 8.9 S 8.1 S V 22.1

70.0 to 74.9 5.4�� V 5.4 S 4.1 S V 32.775.0 to 79.9 7.2�� V 7.2 S S 5.3 V 34.680.0 or more 12.8�� V 12.8 S V 11.3 V 25.3

MILES PER GALLON

Less than 5 51.2�� 21.2 29.9 6.4 13.8 9.7 V 9.65 to 6.9 71.7�� 31.5 40.2 7.2 27.2 5.8 V 7.87 to 8.9 42.2�� 39.5 2.7 .7 1.9 V V 14.19 to 10.9 347.0�� 335.6 S S S V V 16.611 to 12.9 385.5�� 380.7 4.7 4.2 S V V 17.213 to 14.9 475.4�� 469.5 S S S V V 16.315 or more 2 731.2�� 2 647.8 83.4 83.4 V V V 7.6

15 to 20.9 2 031.8�� 1 955.4 76.5 76.5 V V V 8.721 to 24.9 478.0�� 471.1 S S V V V 25.125 or more 221.4�� 221.4 V V V V V 28.8

Not reported 352.6�� 332.8 19.8 8.6 9.7 S V 21.6Not applicable2 S�� S V V V V V S





Truck type

Combination

Total




trailer


trailer


trailers


trailers


total(percent)

MODEL YEAR

2003 V�� V V V V V V N2002 S�� S V V V V V S2001 236.3�� 213.3 S S S S V 25.02000 460.3�� 456.3 4.0 S S S V 20.51999 393.6�� 390.9 2.7 S S V V 19.3

1998 284.6�� 283.7 S V S V V 22.41997 295.6�� 288.4 7.1 S 2.6 S V 27.41996 379.6�� 336.0 S S 5.3 S V 30.11995 318.6�� 301.9 S S 3.2 S V 21.61994 383.6�� 367.1 16.5 S 3.5 S V 30.21993 250.9�� 246.3 4.6 S 3.1 S V 20.9Pre�1993 1 453.6�� 1 374.5 79.2 43.0 30.1 6.1 V 7.5

VEHICLE ACQUISITION

New 1 446.9�� 1 374.5 72.4 60.5 7.3 4.7 V 9.3Used 2 827.2�� 2 704.5 122.6 66.6 44.0 12.0 V 7.1Not reported 191.5�� 188.4 3.1 S 2.0 S V 29.8


Leased 117.6�� 112.1 5.5 S 4.2 V V 31.3Lessee 96.8�� 93.2 3.6 S 2.6 V V 33.5

Vehicle only 14.6�� 11.0 3.6 S 2.6 V V 22.7Vehicle with driver V�� V V V V V V NNot reported S�� S V V V V V SNot applicable4 82.1�� 82.1 V V V V V 39.3

Lessor S�� S S S S V V SVehicle only .8�� S S S S V V 39.2Vehicle with driver S�� S S S S V V SNot reported V�� V V V V V V NNot applicable4 S�� S V V V V V S

Not reported S�� S V V V V V SNot leased 2 425.5�� 2 319.9 105.5 62.4 29.8 13.2 V 8.1Not reported 1 922.6�� 1 835.4 87.2 64.1 19.2 3.8 V 7.8

Length of leasing agreement:Leased 117.6�� 112.1 5.5 S 4.2 V V 31.3

1 to 11 months S�� S S V S V V S12 months or more 17.3�� 12.4 4.9 S 3.6 V V 21.0Not reported S�� S V V V V V SNot applicable4 99.5�� 99.5 V V V V V 36.8

Provisions of lease5:Financing only 15.4�� 12.1 3.3 S 2.3 V V 21.9Full maintenance 3.0�� 2.7 S S S V V 44.5Payment of taxes 1.4�� 1.1 S S V V V 41.0Obtaining licenses and permits 5.2�� 3.2 S S S V V 37.3Recordkeeping 4.4�� S S S S V V 42.6Fuel contract S�� S S S S V V S

PRIMARY OPERATOR CLASSIFICATION

Private 1 080.0�� 979.4 100.6 64.5 28.2 7.9 V 10.4Motor carrier S�� S 16.0 1.0 8.4 6.6 V SOwner operator 33.3�� 3.6 29.7 S 16.3 S V 21.2Rental S�� S S S S V V SPersonal transportation 3 214.2�� 3 163.0 51.2 51.2 V V V 6.3Not applicable2 S�� S V V V V V S


Contract 29.3�� 6.3 22.9 S 13.3 6.4 V 17.4Common 31.1�� 17.9 13.2 1.5 10.3 S V 16.9Not reported 7.7�� 3.9 3.8 S 1.0 S V 28.8Not applicable6 4 397.5�� 4 239.3 158.2 121.7 28.6 7.9 V 4.7

Type of service:Truckload 43.4�� 8.8 34.6 4.9 22.0 7.8 V 12.5Less�than truckload 17.0�� 15.5 1.5 V 1.5 V V 28.5Not reported 7.7�� 3.8 3.9 S S S V 28.8Not applicable6 4 397.5�� 4 239.3 158.2 121.7 28.6 7.9 V 4.7

Source of hauls:Shippers or receivers 46.2�� 20.4 25.8 S 15.3 7.8 V 14.5Brokers S�� V S V S V V SCentralized markets or exchanges S�� S S S S V V SOther V�� V V V V V V NNot reported 17.9�� 7.2 10.7 2.3 7.0 S V 17.5Not applicable6 4 397.5�� 4 239.3 158.2 121.7 28.6 7.9 V 4.7


Carrying hazardous materials 17.8�� 11.6 6.2 S 2.7 S V 21.1Not carrying hazardous materials 221.2�� 141.1 80.0 18.8 48.6 12.6 V 4.8Not reported 13.9�� 9.4 4.5 S 1.5 2.5 V 18.1Not applicable8 4 212.7�� 4 105.3 107.5 107.0 S V V 5.0

EQUIPMENT TYPE5 9

Aerial work platform/bucket 5.0�� 4.9 S S V V V 28.4Air bag(s) (safety device only) 2 242.3�� 2 163.9 78.4 72.2 3.5 S V 8.8Air compressor (except air brakes) 20.6�� 8.5 12.1 S 5.4 5.0 V 17.8Air�conditioning 3 451.2�� 3 287.5 163.7 106.3 41.0 16.4 V 6.1Air springs 38.2�� 4.1 34.2 3.2 21.9 9.1 V 12.1





Truck type

Combination

Total




trailer


trailer


trailers


trailers


total(percent)


Antilock brake system 2 636.7�� 2 523.2 113.4 95.0 10.4 8.0 V 7.8Collision warning system 6.5�� S S S S S V 39.2Computerized drive train control unit 575.6�� 563.4 S S S S V 15.6Crane 6.0�� 4.8 S S S V V 29.8Electronic vehicle identification device S�� S S V S V V S

Engine retarder/brake 86.1�� 19.8 66.2 12.1 39.7 14.5 V 7.5Front�wheel drive 2 802.5�� 2 737.8 64.7 64.7 V V V 5.9Hoist 44.6�� 38.1 6.5 6.5 V V V 9.5Idle�reducing technology (portable auxiliary pack, electrification, etc.) 6.2� S 4.5 S S S V 38.1Internet access V�� V V V V V V N

Lift gate 13.7�� 13.1 S S V V V 26.1Mounting bar for snowplow 26.7�� 26.3 S S V V V 46.7Navigational system V�� V V V V V V NPower take�off 84.6�� 61.7 22.9 8.3 10.4 4.2 V 7.4Radial tires 3 120.6�� 2 952.8 167.9 112.0 40.9 15.0 V 5.9

Reflective material in addition to those required by law 32.2�� 18.7 13.6 3.4 7.5 S V 14.1Road speed governor 58.8�� 34.5 24.3 3.9 12.8 7.6 V 11.5Toolbox 737.8�� 638.9 98.9 67.3 22.2 9.4 V 13.6Trip recorder or on�board computer with communication capabilities 93.1�� 84.7 S S S V V 34.0Trip recorder or on�board computer without communicationcapabilities 677.1�� 652.7 S S 3.1 S V 13.9

Vehicle control aids for handicapped drivers V�� V V V V V V NWheelchair lift S�� S V V V V V SWinch 157.7�� 156.2 1.5 .8 S V V 38.8

Transmission type:Automatic 3 161.7�� 3 080.8 80.9 80.2 S V V 6.7Manual 1 199.5�� 1 084.7 114.8 47.5 50.8 16.5 V 7.9Semiautomated manual S�� S S S S S V SAutomated manual S�� S V V V V V SNot reported 87.6�� 85.6 2.0 S 1.4 S V 37.4

Braking system:Hydraulic (standard) 67.1�� 64.2 2.9 2.6 S V V 11.4Hydraulic with power assist 39.1�� 35.1 4.0 3.8 S V V 12.0Air 134.1�� 53.7 80.4 14.7 50.5 15.2 V 5.6Other V�� V V V V V V NNot reported 14.9�� 10.8 4.1 V 2.2 S V 19.7Not applicable10 4 210.4�� 4 103.6 106.8 106.8 V V V 5.0


Fuel type:Gasoline 3 890.0�� 3 823.0 67.0 66.9 S V V 5.3Diesel 540.9�� 409.9 131.0 60.9 53.0 17.1 V 14.8Natural gas V�� V V V V V V NPropane S�� S V V V V V SAlcohol fuels V�� V V V V V V N

Electricity V�� V V V V V V NCombination S�� S V V V V V SOther V�� V V V V V V NNot reported S�� S S V S V V SNot applicable2 S�� S V V V V V S

Cylinders11:4 cylinders 367.9�� 367.9 V V V V V 17.66 cylinders 1 630.5�� 1 533.1 97.4 34.3 47.1 15.9 V 10.98 cylinders 2 346.9�� 2 256.4 90.5 89.3 .6 S V 6.7Other 120.3�� 110.0 10.3 4.2 5.6 S V 26.6

Cubic inch displacement11:Gasoline fuel 3 890.0�� 3 823.0 67.0 66.9 S V V 5.3

Less than 200 702.9�� 702.9 V V V V V 17.9200 to 299 1 089.9�� 1 082.6 S S V V V 13.7300 to 349 599.9�� 599.9 V V V V V 13.4350 to 399 1 157.9�� 1 107.0 S S V V V 10.4400 or more 285.1�� 277.1 8.0 8.0 V V V 23.5Not available 54.2�� 53.5 S S S V V 27.0

Diesel fuel 540.9�� 409.9 131.0 60.9 53.0 17.1 V 14.8Less than 400 171.7�� 154.4 S S V V V 26.7400 to 599 253.8�� 221.3 S S 1.7 S V 26.2600 to 799 18.9�� 11.8 7.2 S 4.7 S V 12.6800 or more 72.2�� 12.9 59.3 6.2 38.0 15.1 V 8.2Not available 24.2�� 9.5 14.7 4.8 8.5 S V 11.2

Other fuel S�� S V V V V V SLess than 400 S�� S V V V V V S400 or more S�� S V V V V V SNot available S�� S V V V V V S

Not reported S�� S S V S V V SNot applicable2 S�� S V V V V V S

REFUELING LOCATION

Gas station 3 881.7�� 3 784.9 96.8 78.8 17.7 S V 5.5Truck stop 173.9�� 123.8 50.1 S 19.8 7.3 V 25.9Own facility (including home, farm, ranch, onsite by mobile supplier,etc.) 247.5�� 208.9 38.7 S 11.2 6.1 V 17.5

Other company’s/contractor’s facility not open to the public 37.4�� S 7.3 S 2.6 S V 49.2Other V�� V V V V V V NNot reported 116.3�� 110.9 S S 2.1 S V 30.1Not applicable2 S�� S V V V V V S





Truck type

Combination

Total




trailer


trailer


trailers


trailers


total(percent)

MAINTENANCE5

General maintenance performed by:None performed 30.8�� 30.7 .1 V .1 V V 40.3Company�owned maintenance facility 456.9�� 403.6 53.3 21.8 20.9 10.7 V 17.6General repair business or private mechanic 2 075.8�� 1 964.7 111.0 89.3 17.2 4.5 V 9.6Dealership service department 1 056.1�� 1 030.1 26.0 S 4.2 S V 11.6Leasing company S�� S S S V V V S

Individual not employed/paid by any maintenance type facility 1 757.8�� 1 699.8 58.1 30.8 22.9 4.3 V 7.7Other V�� V V V V V V NNot reported 102.2�� 97.4 S S 1.2 S V 32.8Not applicable2 S�� S V V V V V S

Extensive repairs performed by:None performed 3 465.0�� 3 327.9 137.1 89.9 37.1 10.1 V 5.9Company�owned maintenance facility 66.6�� S 14.0 S 5.1 S V 47.7General repair business or private mechanic 451.0�� 428.5 S S 5.8 S V 20.2Dealership service department 324.0�� 307.3 S S 2.8 S V 24.2Leasing company V�� V V V V V V N

Component distributorship (engine, transmission, body, etc.) 7.8�� S 5.3 S 2.8 S V 35.8Individual not employed/paid by any repair type facility 187.1�� 179.1 7.9 2.3 5.0 S V 25.4Other V�� V V V V V V NNot reported S�� S V V V V V SNot applicable2 S�� S V V V V V S

AXLE ARRANGEMENT

Driving axles:1 1 523.2�� 1 474.7 S S 2.1 V V 11.72 2 940.7�� 2 791.3 149.4 81.5 50.8 17.1 V 5.73 or more 1.3�� 1.2 S V S V V 37.0Not reported .5�� S .3 V .3 V V 37.8

Total liftable axles and locations12:None 230.2�� 153.5 76.6 17.1 44.8 14.7 V 4.71 23.4�� 9.2 14.2 3.7 8.1 S V 14.2

Forward of the drive axle 17.5�� 5.8 11.6 3.6 7.2 S V 15.8Below the chassis S�� S S S S V V SBeyond the chassis .9�� .9 V V V V V 45.5Not reported 3.6�� S S S S S V 48.3

2 or more 1.0�� .7 S S V V V 43.8Forward of the drive axle 1.0�� .7 S S V V V 43.8Below the chassis S�� S S S V V V SBeyond the chassis S�� S V V V V V SNot reported V�� V V V V V V N

Not reported .6�� S .3 V .3 V V 44.1Not applicable10 4 210.4�� 4 103.6 106.8 106.8 V V V 5.0

Total liftable axles and number of braking axles:None 230.2�� 153.5 76.6 17.1 44.8 14.7 V 4.71 23.4�� 9.2 14.2 3.7 8.1 S V 14.2

0 braking 3.0�� 2.2 S S S V V 35.51 braking 19.6�� 6.2 13.4 3.6 7.4 S V 15.8Not reported S�� S V V V V V S

2 or more 1.0�� .7 S S V V V 43.80 braking V�� V V V V V V N1 braking V�� V V V V V V N2 or more braking 1.0�� .7 S S V V V 43.8Not reported V�� V V V V V V N

Not reported .6�� S .3 V .3 V V 44.1Not applicable10 4 210.4�� 4 103.6 106.8 106.8 V V V 5.0

CAB TYPE

Conventional cab 221.2�� 135.0 86.1 20.0 49.2 16.9 V 4.7With sleeper 27.1�� V 27.1 V 18.2 8.8 V 13.2Without sleeper 193.1�� 135.0 58.1 20.0 30.4 7.7 V 5.1Not reported 1.0�� V 1.0 V .6 S V 45.1

Cab over engine 33.3�� 28.1 5.2 S 4.0 S V 15.8With sleeper 2.8�� V 2.8 V 2.7 S V 20.2Without sleeper 30.5�� 28.1 S S S S V 17.2Not reported S�� V S V S V V S

Cab forward of engine S�� S V V V V V SCab beside engine S�� S V V V V V SNot reported S�� S S V S V V SNot applicable10 4 210.4�� 4 103.6 106.8 106.8 V V V 5.0








Table 8. Truck Miles Distribution by Operational Characteristics: 2002[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristicsCoefficient of variation (percent)Truck miles

distribution forall trucks

Truck miles distributionexcluding pickups,

minivans, other light vans,and sport utilities

A B A B

Total 4 465.6�� 255.2 4.7 4.4

TRAILER CONFIGURATION

No trailer pulled 4 126.8�� 162.8 4.9 5.7Single trailer pulled 311.9�� 74.2 11.5 6.9Double trailers pulled 18.1�� 18.1 20.5 20.5Triple trailers pulled V�� V N NNot applicable1 S�� S S S

RANGE OF OPERATION

Off�the�road 179.2�� 16.9 13.9 9.650 miles or less 2 331.6�� 120.8 5.2 5.751 to 100 miles 731.3�� 52.6 14.8 10.0101 to 200 miles 365.2�� 23.2 12.4 14.0201 to 500 miles 221.1�� 14.6 17.9 20.6

501 miles or more 283.5�� 4.1 18.1 37.7Not reported 344.9�� 22.9 31.7 14.3Not applicable1 S�� S S S

JURISDICTION

Operated in Canada 9.0�� .3 36.3 35.2Operated in Mexico S�� V S NOperated within the home base state 3 969.8�� 232.7 5.1 4.6Operated in states other than the home base state 300.3�� 10.7 16.3 21.7Not reported 175.6�� 11.5 26.6 18.9Not applicable1 S�� S S S

OPERATOR CLASSIFICATION

Private 1 126.9�� 183.4 9.5 4.9Motor carrier 110.2�� 40.9 49.9 15.5Owner operator 32.9�� 27.2 21.3 15.0Rental S�� 1.9 S 42.6Personal transportation 3 166.8�� 1.8 6.1 42.0Not applicable1 S�� S S S


Contract 29.9�� 29.9 16.9 16.9Common 30.5�� 30.5 14.1 14.1Not reported 7.7�� 7.7 28.8 28.8Not applicable2 3 4 397.5�� 187.1 4.7 4.9

Type of service:Truckload 17.1�� 17.1 27.5 27.5Less�than truckload 43.3�� 43.3 12.5 12.5Not reported 7.7�� 7.7 28.8 28.8Not applicable2 3 4 397.5�� 187.1 4.7 4.9

PRODUCTS CARRIED4

Animals and fish, live 24.3�� 3.1 43.3 22.7Animal feed and products of animal origin 40.6�� 4.3 37.2 18.4Grains, cereal 19.2�� 11.7 25.5 9.0All other agricultural products 4.4�� 3.5 23.8 16.5Basic chemicals S�� S S S

Fertilizers and fertilizer materials 5.6�� 2.4 40.1 40.9Pharmaceutical products S�� S S SAll other chemical products and preparations S�� S S SAlcoholic beverages 1.1�� 1.1 47.1 47.1Bakery and milled grain products S�� S S S

Meat, seafood, and their preparations 3.6�� S 49.0 STobacco products V�� V N NAll other prepared foodstuffs 5.9�� 4.0 35.6 39.6Logs and other wood in the rough 13.0�� 10.0 20.8 19.3Paper or paperboard articles S�� S S S

Printed products S�� S S SPulp, newsprint, paper, and paperboard S�� S S SWood products 49.5�� 13.0 33.5 24.1Articles of base metal 51.8�� 11.7 45.1 23.5Base metal in primary or semifinished forms 58.6�� 6.6 46.5 24.3

Nonmetallic mineral products 4.9�� 4.9 19.3 19.3Tools, nonpowered 274.0�� 29.3 20.1 13.6Tools, powered 241.8�� 22.3 22.2 15.4Electronic and other electrical equipment S�� 2.8 S 49.3Furniture, mattresses, lamps, etc. 2.8�� 2.0 37.3 40.5

Machinery 8.9�� 7.2 19.7 19.9Miscellaneous manufactured products S�� 2.6 S 48.5Precision instruments and apparatus 4.8�� 4.8 39.8 39.8Textile, leather, and related articles S�� S S SVehicles, including parts 26.7�� 4.1 37.9 27.7

All other transportation equipment S�� .6 S 42.1Coal S�� S S SCrude petroleum S�� S S SGravel or rushed stone 11.0�� 10.4 14.9 14.5Metallic ores and concentrates S�� S S S

Monumental or building stone S�� S S SNatural sands 1.2�� 1.2 36.7 36.7All other nonmetallic minerals .3�� .3 46.3 46.3Fuel oils 10.0�� 5.6 30.9 29.7Gasoline and aviation turbine fuel S�� 2.0 S 37.6



Table 8. Truck Miles Distribution by Operational Characteristics: 2002�Con.[Millions. Estimates are based on data from the 2002 Vehicle Inventory and Use Survey. Because of rounding, estimates may not be additive]

Vehicular and operational characteristicsCoefficient of variation (percent)Truck miles

distribution forall trucks

Truck miles distributionexcluding pickups,

minivans, other light vans,and sport utilities

A B A B

PRODUCTS CARRIED4�Con.

Plastics and rubber S�� S S SAll other coal and refined petroleum products 4.8�� 4.0 34.8 39.9Hazardous waste (EPA manifest) S�� S S SAll other waste and scrap (non�EPA manifest) 17.7�� 9.1 33.9 19.4Recyclable products S�� S S S

Mail and courier parcels S�� 11.3 S 38.3Empty shipping containers 1.0�� 1.0 48.2 48.2Passengers S�� S S SMixed freight S�� S S SProducts, equipment, or materials not elsewhere classified 2.1�� 2.1 26.5 26.5Products not specified 27.5�� 5.7 38.2 20.5Not applicable1 S�� S S S


Division 1.1, Explosives V�� V N NDivision 1.2, Explosives V�� V N NDivision 1.3, Explosives V�� V N NDivision 1.4, Explosives S�� S S SDivision 1.5, Explosives S�� S S S

Division 1.6, Explosives S�� S S SDivision 2.1, Flammable gas 3.3�� 3.3 43.7 43.7Division 2.2, Nonflammable gas S�� S S SDivision 2.3, Poison gas S�� S S SClass 3, Flammable 3.2�� 3.2 39.0 39.0

Combustible liquid S�� S S SOxygen 2, Oxygen S�� S S SDivision 4.1, Flammable solid S�� S S SDivision 4.2, Spontaneously combustible S�� S S SDivision 4.3, Dangerous when wet S�� S S S

Division 5.1, Oxidizer .2�� .2 50.0 50.0Division 5.2, Organic peroxide S�� S S SDivision 6.1, Poison inhalation hazard S�� S S SDivision 6.1, Poison S�� S S SClass 7, Radioactive S�� S S S

Class 8, Corrosive S�� S S SClass 9 S�� S S SHazardous materials not specified S�� S S SNot applicable1 S�� S S S


1Vehicles not in use. When the respondent had partial�year ownership of the vehicle, annual miles were adjusted to reflect miles traveled when not owned by the respondent.2Column A includes: pickups, minivans, other light vans, and sport utilities; all other vehicles that are private, rental, or used for personal transportation; and vehicles not in use.3Column B includes: all other vehicles that are private, rental, used for personal transportation, or not in use.4Detail lines may not add to total because multiple products/hazardous materials may be carried at the same time.



Appendix.Approximating Unpublished Coefficients ofVariation

Estimated coefficients of variation (CVs) are presented for only the row and column totals forTables 4 through 7.

The coefficient of variation for an individual cell in a particular table can be approximated byusing the procedure below. CVs for each cell, estimated from the sample data, are available onrequest.

Tables 4 and 5

The CV (expressed as a percentage) for a cell in a particular table can be calculated as follows:

CV�C� � CV�S� *� S �STATE � C�

C �STATE � S�

where:

S = the smaller number between the row and column truck totals for the row and columncontaining the cell

C = the number of trucks in the cellSTATE = the number of trucks in the stateCV(S) = the coefficient of variation corresponding to S

Tables 6 and 7

For Tables 6 and 7, follow the above procedure but replace ‘‘trucks’’ with ‘‘truck miles.’’

Example

Suppose, in Table 4, there are an estimated 40.0 thousand trucks in the cell for retail light-sizedtrucks, for which an approximation of the CV is needed. The following information must beextracted from the table: (1) 2222.2 thousand trucks in the state, (2) 46.0 thousand trucks and anestimated CV of 27.6 percent for the ‘‘Retail Trade’’ row, and (3) 2034.0 thousand trucks and anestimated CV of 1.1 percent for the ‘‘Light-sized trucks’’ column. Since the row total of 46.0 thou-sand is less than the column total of 2034.0 thousand, use the row figure to approximate the CV:

CV (retail light-sized trucks)=

� 27.6 *� 46.0 * �2222.2 � 40.0�

40.0 * �2222.2 � 46.0�

� 29.6%

Some exceptions from this procedure will yield better approximations of the coefficients of varia-tion in particular cells. Certain rows and columns in the tables are composed predominantly of‘‘large trucks’’ (trucks excluding pickups, minivans, other light vans, and sport utilities). Becauseof the sample design, one obtains a better approximation of the coefficient of variation for a cellwhen the value of S is equal to the truck total associated with the ‘‘large trucks’’ even though thistruck (row or column) total may not be the smaller of the two truck totals. For example, if the col-umn containing the cell is composed of ‘‘large trucks,’’ then S is equal to the column total. Whenboth totals consist of ‘‘large trucks,’’ use the smaller of the row and column totals.

Columns of predominately ‘‘large trucks:’’

Tables 4 and 6—Light-heavy and Heavy-heavy

Appendix A–1Vehicle Inventory and Use Survey


Tables 5 and 7—Single-unit truck with trailer and all Truck-tractor trailer columns

Rows of predominately ‘‘large-trucks:’’

Body Type—All except pickup, minivan, other light vans, and sport utilityAnnual Miles—75,000 miles or moreVehicle Size—Light-heavy and Heavy-heavyAverage Weight—19,501 pounds or moreTotal Length—50.0 or moreMiles per Gallon—Less than 5 and 5 to 6.9Primary Operator Classification— Motor carrier, Owner operatorPrimary Operator Classification, For-hire characteristics—Type of carrier, Type of serviceHazardous Materials Carried—Carrying hazardous materialsEquipment Type—Electronic vehicle identification device, Engine retarder/brake, Navigational

system, and Reflective material in addition to those required by lawEquipment Type, Braking system—All rows except Not applicableFuel Type and Engine Size, Cubic inch displacement, Diesel fuel—600 or more and Not

availableTruck Type and Axle Arrangement, Single-unit trucks and truck-tractors without trailer—3

axles or moreTruck Type and Axle Arrangement, Combinations—All Truck-tractor rowsCab Type—All rows except Not applicable

A–2 Appendix Vehicle Inventory and Use Survey


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Montana: 2002 · Montana: 2002 2002 Economic Census Vehicle Inventory and Use Survey Geographic Area Series Issued September 2004 EC02TV-MT U.S. Department of Commerce