3/21/08 Ver2.2 Presentation to the TFS 1 Final Version 2.2 Travel Demand Model Documentation Part II Presentation to the TPB Travel Forecasting Subcommittee

3/21/08 Ver2.2 Presentation to the TFS 1

Final Version 2.2 Travel Demand Model Documentation

Part II

Presentation to theTPB Travel Forecasting Subcommittee

Ron Milone

March 21, 2008

TFS_Pres_Ver2.2model_3_21_2008.ppt

Item #2


Recent Events Jan. 18, 2008 Version 2.2 model used in TPB’s

conformity work; draft report distributed to TFS

Late January – mid-February

Additional refinements implemented; conformity scenarios re-run with refinements

Late February Model documentation finalized; transmittal package prepared

March 1, 2008 Documentation is posted on the TPB web site. TPB responded to outstanding requests


Final Documentation on Website


Version 2.2 Documentation• What’s included:

1. Overview of features & description (Ch. 1)

2. Inputs & model specification (Ch. 2-8)

3. Validation (Ch. 9)

4. User’s application guide (Ch. 10-21)

5. Technical appendix• Detailed model output summaries• Application listings (scripts, batch files, etc.)• Flowcharts


Distinguishing Features of Ver. 2.21. Commercial vehicle model added

2. Revised/moderated external traffic forecasts

3. Revised volume-delay functions and added queuing delay function to freeway volume-delay formulation

4. Reduction/removal of model adjustments (K factors, etc.)

5. 60 Iterations of user equilibrium traffic assignment


Latest Refinements: #1 of 3Modified approach for disabling ‘dummy links’ from queuing delay

• Revised approach identifies link disabling on a time-of-day basis; this is more accurate


Latest Refinements: #2 of 3Modified highway toll skims development wrt. the mode choice model

• Highway skims are normally developed by mode (SOV, HOV 2-occ, HOV 3+occ) and include time, distance, toll

• Tolls are now expressed differently, based on toll policy type:– Fixed toll facilities (e.g., Gov. Nice Bridge,

Dulles Toll Road)– Variably priced toll facilities (HOT Lanes in

Virginia, electronic toll lanes in Md.)


Latest Refinements: #3 of 3Modified highway toll skims development wrt. the mode choice model

Previous highway skim definition

Time (in min)

Distance (in 1/10s of mi.)

Toll on any facilities (in cents)

Updated highway skim definition

Time plus time equivalent of monetary toll values on variably priced toll facilities only (in min)

Distance (in 1/10s of mi.)

Toll on fixed price toll facilities only

(in cents)


Previous and Revised Traffic Growth Projections at all External Stations

0

0.5

1

1.5

2

2.5

3

3.5

2000 2005 2010 2015 2020 2025 2030Year

Avg

. An

nu

al D

aily

Tra

ffic

(M

illio

ns)

previous

revised


Total HH, Job, and VMT Forecasts Version 2.2 Model w ith Round 7.1 Coop. Forecasts

0

1,000

2,000

3,000

4,000

5,000

6,000

2000 2005 2010 2015 2020 2025 2030

Year

HH

s, J

ob

s (

in t

ho

us

an

ds

)

0

50

100

150

200

250

VM

T (

in m

illio

ns

)

Households Employment Total VMT


Vehicle Miles of Travel Forecasts (in millions)V2.1D#50 Air Quality Conformity (Fall 2006)

vsV2.2 Air Quality Conformity (Fall 2007)

149

171

195

217

147

166

188200

0

50

100

150

200

250

2002 2010 2020 2030

V2.1D#50

V2.2

Note: V2.1D#50 model results are based on Round 7.0a Cooperative Forecasts; V2.2 model results are based on Round 7.1 Cooperative Forecasts


VMT per Household Forecasts V2.1D#50 Air Quality Conformity (Fall 2006)


67.0 67.1 67.4 68.365.8 64.6 64.1 62.5

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

2002 2010 2020 2030

V2.1D#50

V2.2



2030 VMT by Facility Type (millions)V2.1D#50 Air Quality Conformity (Fall 2006)


92

71

28

159

79

69

29

12 9

230

10

20

30

40

50

60

70

80

90

100

Freeway Major Art Minor Art Collector Exprway. Ramp

V2.1D#50

V2.2



P/A Balance Over TimeBased on V2.2 Trip Generation and Round 7.1 Coop. Forecasts

Productions Attractions P/AYear Purpose (intl.&extl.) (intl.&extl.) Ratio2005 hbw 4,266,430 4,330,065 0.99

hbs 3,348,743 3,149,597 1.06hbo 10,242,674 10,122,045 1.01total hb 17,857,847 17,601,707 1.01

2010 hbw 4,640,673 4,759,902 0.97hbs 3,638,780 3,397,367 1.07hbo 11,079,047 11,016,825 1.01total hb 19,358,500 19,174,094 1.01




Special Modeling Applications(Reference page 1-10 in Model Report)

• Some forecasts are developed using elements of two model executions. This approach is used to reflect special policy conditions:

1. Transit constraint: 2010 transit trips are used to constrain modeled 2020, 2030 transit trips to/through the regional ‘core’

2. HOT lane modeling: HOV level-of-service matrices are specially developed in ‘initial’ model executions; the ‘initial’ HOV skims are used in the ‘final’ model execution


Transit Constraint (Applied in 2020, 2030 simulations)

– Reason: Infrastructure limitations will constrain peak Metrorail travel to/through the regional ‘core’ to 2010 levels

– Approach: 1. 2010 model run is executed; 2010 final iteration

transit trips created 2. 2020/ 2030 model runs are executed; after mode

choice step, peak transit trips to/through the regional core are compared to 2010 levels.

3. 2020/2030 peak transit trips exceeding 2010 levels are converted to auto trips


HOT Lane Modeling (Applied in 2010, 2020, 2030 simulations)

• Reason: VA policy assumes that HOV service levels will be maintained with HOT lane operation

• Approach:1. An initial run is executed with the HOT lane facility simulated

as an HOV-priority facility (hypothetical). HOV level of service (LOS) matrices for each iteration are developed. This is known as a ‘BASE’ model execution

2. A second model run is executed, with the HOT lane facility accordingly coded (pay SOV’s and free HOV’s are allowed access). Initial tolls rates are used. The final assignment is then run iteratively, so that tolls rates are developed by segment and time-period (off-line step)

3. A final run utilizes the HOV LOS matrices developed in Step 1 with the toll rates developed in Step 2. This final model execution is known as the ‘Conformity’ run


TPB Forecasts Must Be Executed in Sequence

• Model years available: 2000, 2002, 2005, 2008-2010, 2020, 2030

• ‘Early’ years (2000 – 2009) are not dependent upon prior runs

• ‘Out’ years 2010-2030 are dependent on prior runs; recommended sequence:

1. 2010 Base 2. 2010 Conformity3. 2020 Base4. 2020 Conformity5. 2030 Base6. 2030 Conformity


Version 2.2 Model Execution

• Applied in a ‘command prompt’ window

• Structured application – Standardized subdirectory system– Pre-established batch files– Generically named inputs and outputs that are

established in specific subdirectories


Why use specific subdirectories, generic names, and batch files?

• It minimizes model preparation time • Generically named inputs and outputs

facilitates the ability to prepare comparative summaries between alternatives

• It enables the analyst to focus on what’s important: – the accuracy of inputs– the analysis of outputs


Version 2.2 Subdirectories\Version2.2_Xmittal\

(batch files)

\SOFTWARE\CONTROLS\SCRIPTS\SUPPORT

\2000_ModDev\Inputs

\2002_Conf\Inputs

\2005ModDev\Inputs...

\2030_Conf\Inputs

‘Root’ Subdirectory / name arbitrary, typically project related

‘Boilerplate’ subdirectories for model application Subdir. names must be as shown

‘Model ‘output’ subdirectories / name is arbitrary ‘output’ subdirs. must have a ‘child’ subdirectory named ‘Inputs’ where modeling inputs reside. Input files are named generically


Batch File Types in the Root SD

NOTE: the _Year_ variable must be accurately defined (e.g. ‘_year = 2030’)

Batch Files Purpose

Primary batch file(e.g., Runall2000.bat)

Defines secondary batch file, output subdirectory (used in sec. batch file, and generates run time / log files

Secondary batch file (e.g., Runall_2000.bat)

Defines sequence of iterations and modeling steps, defines year (_year_), and model description (_Alt_)

Model Step batch files (Set_Factors.bat) . . . (Highway_skims.bat)

Calls scripts/ programs to execute individual modeling steps and to provide iteration-specific file output names

User enters this batch file name at command prompt

Pre-established file ‘called’ by primary batch file

Pre-established file ‘called’ by secondary batch file


Primary Batch File:: runall2000.bat, 2008-02-04:: Source: M:\model_dev\Version2.2_Jan08_Xmittal

set root=E:\model_dev\Version2.2_Jan08_Xmittal set scenar=2000set runbat=runall_2000.batset fullpth=%root%\%scenar%:: Std error redirected to a file; Std output split between file and screentimethis "cmd /c %runbat% %scenar% 2> %fullpth%\%scenar%_errs.txt" | tee %fullpth%\%scenar

%_output.txtstart %fullpth%\%scenar%_errs.txtstart %fullpth%\%scenar%_output.txt

:: Cleanupset root=set scenar=set fullpth=set runbat=

Output Subdirectory

Root Subdirectory

Secondary batch file

Output log and error listing files


Example Section of Secondary Batch File

:: runall_2000.bat

:: TPB Travel Model, Version 2.2

set _year_=2000set _alt_=Version_2.2

:: Make sure appropriate MC control files exist in \controls SD :: and copy to generic names in the output SD.if not exist controls\mc_hbw00.ctl goto errif not exist controls\mc_hbs00.ctl goto errif not exist controls\mc_hbo00.ctl goto errif not exist controls\mc_nhb00.ctl goto errcopy controls\mc_hbw00.ctl %1\mchbw.ctl /ycopy controls\mc_hbs00.ctl %1\mchbs.ctl /ycopy controls\mc_hbo00.ctl %1\mchbo.ctl /ycopy controls\mc_nhb00.ctl %1\mcnhb.ctl /y

rem ====== Pump Prime Iteration ==========================================

set _iter_=ppset _prev_=pp

call Set_Factors.bat %1

call Set_CPI.bat %1

call PP_Highway_Build.bat %1

.

.

.call Highway_Assignment.bat %1

call Highway_Skims.bat %1

rem ====== End of batch file =============================================


Model Step Batch File ExampleHighway Assignment

CD %1

REM Highway Assignment

del tppl*.*del %_iter_%_Highway_Assignment.rptstart /w TPPLUS.EXE ..\scripts\Highway_Assignment.s /start -Ptppl -S..\%1if errorlevel 1 goto error

copy tppl*.prn %_iter_%_Highway_Assignment.rptcopy %_iter_%_Highway_Assignment.rpt temp.dat..\software\extrtab temp.datcopy extrtab.out %_iter_%_Highway_Assignment.tab

goto end:errorREM Processing Error....PAUSE:endCD..


Version 2.2 Modeling Step Batch Files

Batch File Scripts / Programs Purpose

Set_Factors.bat Set_Factors.s Create K-factors and time penalties

Set_CPI.bat Set_CPI.s Create highway and transit cost deflators

PP_Highway_Build.bat Staprotp.exe Highway_Build_Toll.s

Extract transit network elements from station file. Build highway network

PP_Highway_PNR.bat Pump_Prime_Skims.s Create initial AM/ off-peak hwy. skims & auto access links

Highway_PNR.bat Auto_Access.s Create current iteration auto access links

PP_Transit_Prep.bat

NodesTB.exe Cntconn2.exe Gis_proc.exe Wlklnktp.exe Update_Wklinks.s Prefartp.s

Create base transit network, walk links, and transit fare file

Transit_Skim.bat Transit_Skims.s Create transit skims of initial or current iteration

Transit_Fare.batMetrorail_Skims.s Mfare1.s Mfare2.s

Create current iteration transit fares

Trip_Generation.bat

Demo_models.s Trip_Generation.s CV_Trip_Generation.s COGMCA1.exe

Execute daily trip generation

Trip_Distribution.batTrip_Distribution.s CV_Trip_Distribution.s Execute daily trip distribution

Mode_Choice.bat or Mode_Choice_TC.bat or HSR10_Mode_Choice.bat or HSR20_Mode_Choice_TC10.bat or HSR30_Mode_Choice_TC10.bat

COGMC.exe MC_Summary.s MC_Constraint.s MC_ConSummary.s

Execute daily mode choice model (optionally execute mode choice model with the Transit Constraint (TC) and/or with HOV Skim Replacement (HSR))

PP_Auto_Drivers.bat PP_Auto_Drivers.s Generate initial auto drivers (without mode choice model)

Auto_Driver.bat MC_Auto_Drivers.s Generate initial auto drivers after mode choice model

Time-of-Day.bat Time-of-Day.s CV_Time-of-Day.s Misc_Time-of-Day.s

Convert daily modeled trips to AM, PM, and Off-peak

Highway_Assignment.bat Highway_Assignment.sExecute user equilibrium hwy. assignment using Frank-Wolfe algorithm

Highway_Skims.bat Highway_Skims.s Create highway skims from assignment


Sequence of Version 2.2 Modeling Steps by Iteration Initial (Pump Prime) Iteration

Standard Iterations

Batch File Scripts / Programs PP 1 2 3 4 5 6

Set_Factors.bat Set_Factors.s 1

Set_CPI.bat Set_CPI.s 2

PP_Highway_Build.bat Staprotp.exe Highway_Build_Toll.s 3

PP_Highway_PNR.bat Pump_Prime_Skims.s 4

Highway_PNR.bat Auto_Access.s 13 23 33 43 53 63

PP_Transit_Prep.bat

NodesTB.exe Cntconn2.exe Gis_proc.exe Wlklnktp.exe Update_Wklinks.s Prefartp.s

5

Transit_Skim.bat Transit_Skims.s 6 14 24 34 44 54 64

Transit_Fare.batMetrorail_Skims.s Mfare1.S Mfare2.s

15 25 35 45 55 65

Trip_Generation.bat Trip_Generation.s CV_Trip_Generation.s 7 16 26 36 46 56 66

Trip_Distribution.batTrip_Distribution.s CV_Trip_Distribution.s 8 17 27 37 47 57 67

Mode_Choice.bat or Mode_Choice_TC.bat or HSR10_Mode_Choice.bat or HSR20_Mode_Choice_TC10.bat or HSR30_Mode_Choice_TC10.bat

COGMC.exe MC_Summary.s MC_Constraint.s MC_ConSummary.s

18 28 38 48 58 68

PP_Auto_Drivers.bat PP_Auto_Drivers.s 9

Auto_Driver.bat MC_Auto_Drivers.s 19 29 39 49 59 69

Time-of-Day.bat Time-of-Day.s CV_Time-of-Day.s Misc_Time-of-Day.s

10 20 30 40 50 60 70

Highway_Assignment.bat Highway_Assignment.s 11 21 31 41 51 61 71

Highway_Skims.bat Highway_Skims.s 12 22 32 42 52 62 72


What Files are in the Inputs SD?

• 42 files are required consisting of: – Land use files– Exogenous trip files– External, through trip files– Highway/transit network files – 2 optional transit access link files may be

used if desired (be careful)

Recommendation: DO NOT mix and match V2.1D inputs with V2.2


Land Use / Trip InputsText or Updates from V2.1D#50

Filename Description Binary

ZONE.ASC Zonal Land Use TextRound 7.1 Land use - based. Essentially same, but the zonal income index has been updated

AREAOVER.ASC Zone Area Type Override File Text -

AEXT.ASC Zonal External Attractions TextForecasts updated, per Rnd 7.1 and revised growth assumptions

PEXT.ASC Zonal External Productions TextForecasts updated, per Rnd 7.1 and revised growth assumptions

CV_ExtThru_Ends.ASC Zonal Commercial Vehicles External and Through trip ends

Text New File/ CV model

AIRPAX.ADR Air Passenger Auto Dr. Trips Binary Forecasts updated, per Rnd 7.1SCHL.ADR School Auto Dr. Trips Binary -TAXI.ADR Taxi Auto Dr. Trips Binary -VISI.ADR Visitor/Tourist Auto Dr. Trips Binary -

XXAUT.VTT Through Auto Drivers BinaryForecasts updated, per Rnd 7.1 and revised growth assumptions

XXTRK.VTT Through Trucks BinaryForecasts updated, per Rnd 7.1 and revised growth assumptions

XXCV.VTT Through Commercial Vehicles trips

Binary New File/ CV model


Network InputsText or Updates from V2.1D#50

Input Type Filename Description Binary

Network, highway LINK.ASC Highway Links Text TOLLGRP field expandedNetwork, highway NODE.ASC Highway Node File Text -Network, highway TAZAMSPD.LKP AM TAZ/Facility Type Speed Look-up Text -Network, highway TAZOPSPD.LKP Off-Peak TAZ/Facility Type Speed Look-up Text -Network, highway AMSPD.LKP AM Facility/Area Type Speed Look-up Text -Network, highway OPSPD.LKP Off-Peak Facility/Area Type Speed Look-up Text -

Network, highway TOLL.ESC Highway Toll Value / Deflator File TextTG_ATOVR added to impose uniform speeds/capacities on HOT Links, ESCFAC array should be set to zero.

Network, highway TOLL.INC Highway Toll /Time Equivalent by Income Grp. Text -Network, highway TOLL.SKM Highway Toll/Time Equivalent by Veh. Type Text -

Network, transitMODE1AM.TB,…MODE9AM.TB MODE1OP.TB,… MODE9OP.TB AM/OP Transit Line Files, Mode 1 to 9 Text

Now developed in TRNBUILD format, not TRNPTH; OWNER keyword used

Network, transit STA_TPP.BSE Rail Station/PNR File TextMax. staitions/PNR lots is now 1000; 'L' code now used (light rail) in addition to 'M', 'C', and 'B'

Network, transit RAIL_LNK.BSE Rail Links Text -Network, transit TRNPEN.DAT Metrorail Station Network Turn Penalty File Text -Network, transit GISWKAAM.ASC GIS AM Zonal Walk Area File Text -Network, transit GISWKAOP.ASC GIS Off-Peak Zonal Walk Area File Text -Network, transit GISWKLAM.ASC GIS AM Walk Link File Text -Network, transit GISWKLOP.ASC GIS Off-Peak Walk Link File Text -Network, transit LBUS_TIMFTRS.ASC Local Bus Time Degradation Factors Text -Network, transit RIVERSTP.BNA River Coordinate File Text -

Network, transit TAZFRZN.ASC TAZ/Bus Fare Zone Equivalency Text New format, per MFARE TP+ conversion

Network, transit BUSFARAM.ASC MFARE2 AM Bus Fare Zone Matrix Text New format, per MFARE TP+ conversion

Network, transit BUSFAROP.ASC MFARE2 Off-Peak Fare Zone Matrix Text New format, per MFARE TP+ conversion

Network, transit HBOMC.OLD Initial HBO Mode Choice Trips Binary -Network, transit HBSMC.OLD Initial HBS Mode Choice Trips Binary -Network, transit HBWMC.OLD Initial HBW Mode Choice Trips Binary -Network, transit NHBMC.OLD Initial NHB Mode Choice Trips Binary -Network, transit mfare1_Sta_Disc.ASC Metrorail Station Discount File Text New FILE, per MFARE TP+ conversion

Network, transit Tariff.txt WMATA Tariff policy control file Text New FILE, per MFARE TP+ conversion

Network, transit CPI_FILE.txt Historical CPI file Text New FILE, per SET_CPI.S script


Iteration 6 Outputs: Transit

Filename File Type Tables on Matrices

i6_AM_WK.SKM binary matrix t1 - xfer walk time (min)i6_AM_DR.SKM t2 - drive acc time (min)i6_OP_WK.SKM t3 - initial wait (min)i6_OP_DR.SKM t4 - xfer wait (min)

t5 - in-veh time bus (min)t6 - in-veh time Metrorail (min)Note: Walk access time NOT included above

i6_AM_WK.TTT binary matrix t1/total transit time (min)i6_AM_DR.TTTi6_OP_WK.TTTi6_OP_DR.TTT

Note: Avg. Walk access time IS included above


Iteration 6 Outputs: Transit Fares

Filename File Type Tables on Matricesi6_AM_WK.FAR binary matrix t1- Total deflated transit faresi6_AM_DR.FARi6_OP_WK.FARi6_OP_DR.FAR

i6_AM_WK.FR5 binary matrix t1- Total deflated transit faresi6_AM_DR.FR5 t2 - non-deflated bus farei6_OP_WK.FR5 t3 - non-deflated Metrorail farei6_OP_DR.FR5 t4 - non-deflated access bus fare

t5 - non-deflated egress bus fare


Iteration 6 Outputs: Trip Gen. Filename File Type Description

Est_Zonal_HH_Size.TXT Text zonal HHs by size group: 1, 2, 3, 4+Est_Zonal_HH_VehAv.TXT zonal HHs by vehs available: 0, 1, 2, 3+Est_Zonal_HH_Inc.TXT zonal HHs by income group: 1, 2, 3, 4

i6HHI1_SV.ASC Text zonal HHs in income group 1 by Size/ Veh.Av. groupsi6HHI2_SV.ASC zonal HHs in income group 2 by Size/ Veh.Av. groupsi6HHI4_SV.ASC zonal HHs in income group 3 by Size/ Veh.Av. groupsi6HHI3_SV.ASC zonal HHs in income group 4 by Size/ Veh.Av. groups

i6HH_Veh.dat Text zonal HHs by vehs. avail.: 0, 1, 2+

hbw_NM_PsAs.ASC Text zonal non-motorized trips

i6_Trip_Generation.txt Text Trip generation trip summary report


Iteration 6 Outputs: Trip Dist.

Filename File Type Tables on Matrices / Description

hbwesti6.ptt binary 7 Psn Tabs by market - Inc 1,2,3,4, Ext Intst./Extl Art., Total hbsesti6.ptt 7 Psn Tabs by market - Inc 1,2,3,4, Ext Intst./Extl Art., Total hboesti6.ptt 7 Psn Tabs by market - Inc 1,2,3,4, Ext Intst./Extl Art., Total nhbesti6.ptt 4 Psn Tabs by market - Iinternal, Ext Intst./Extl Art., Total mtkesti6.vtt 3 Veh. tabs by market - Intl, Extl., Totalhtkesti6.vtt 3 Veh. tabs by market - Intl, Extl., Total

i6_hbwmu.ptt binary (MINUTP) t1 - Total HBW person tripsi6_hbsmu.ptt t1 - Total HBS person tripsi6_nhbmu.ptt t1 - Total HBO person tripsi6_hbomu.ptt t1 - Total NHB person trips

i6_TrpDst.tab text Jurisdictional Trip summaries by purpose

com.trp binary commercial veh. trips


Iteration 6 Outputs: Mode Choice

Filename File Type Tables on Matrices / Descriptionmc_HBWi6.FIN binary/MIMUTP t1/LOV Auto Drivermc_HBSi6.FIN t2/LOV Auto Person mc_HBOi6.FIN t3/ Walk Access Transitmc_NHBi6.FIN t4/ Drive Access TransitMC_ALLi6.FIN t5 /HOV Auto Driver - 2 Psn Occ. - on priority facilities

t6/ HOV Auto Person t7 /HOV Auto Driver - 3+ Psn Occ.- on priority facilities

i6_mc_summary.tab text Jurisdicational summary of mode choice model, by purposei6_mc_Consummary.tab text

Note: unconstrained and constrained Mode choice outputs are provided


Iteration 6 Outputs: Assignment, Highway Skims

Filename File Type Tables on Matrices / Descriptioni6PM.VTT binary t1-SOV trips i6AM.VTT t2-HOV2Occi6OP.VTT t3-HOV3+Occ

t4-Truckst5- Airport Auto Drivers

I6HWY.NET Loaded Links file

Highway_Assignment.tab Trip summary

sovi6op.skm t1- time(min), Distance (1/10ths mi), Toll (1994 cents)hov2i6op.skm t1- time(min), Distance (1/10ths mi), Toll (1994 cents)hov3i6op.skm t1- time(min), Distance (1/10ths mi), Toll (1994 cents)


Link variables on the final loaded-link highway network (i6hwy.net)

Variable Format Description A 5 A node B 5 B node DISTANCE 5.2 Link distance (miles) SPDCLASS 2 Speed class CAPCLASS 2 Capacity class COUNT 3 Daily ground count in thousands (AAWT) JUR 2 Jurisdiction Code (0-23):

0/dc, 1/mtg, 2/pg, 3/alr/, 4/alx,5, ffx, 6/ldn, 7/ pw, 8/(unused), 9/ frd, 10/how, 11/aa, 12/chs, 13/(unused), 14/car, 15/cal, 16/stm, 17/ kg, 18/fbg, 19/stf, 20/spts, 21/fau, 22/clk, 23/jef

SCREEN 2 Screenline code (1-20, 22-28, 31-38) FTYPE 1 Link Facility Type Code (0-6):

0/centroids, 1/Freeways, 2/Major Art., 3/Minor Art, 4/Collector, 5/Expressway, 6/Ramp (future use)

TOLL 3 Toll Value in current year dollars TOLLGRP 1 Toll Group Code (1-9) AMLANE 1 AM Peak No. of Lanes AMLIMIT 1 AM Peak Limit Code (0-9) See note #1 PMLANE 1 PM Peak No. of Lanes PMLIMIT 1 PM Peak Limit Code (0-9) See note #1 OPLANE 1 Off-Peak No. of Lanes OPLIMIT 1 Off-Peak Limit Code (0-9) See note #1 PROJ_ID A/N Project ID TAZ 4 Transportation Analysis Zone associated with the link AREATP 1 Area type (1-7) DEFLATIONFTR 6.3 Factor for deflating current year tolls to 1994 values AMTOLL 9.5 Final AM period toll value derived from TOLL & TOLLGRP PMTOLL 9.5 Final PM period toll value derived from TOLL & TOLLGRP OPTOLL 9.5 Final OP period toll value derived from TOLL & TOLLGRP PPAMSPD 8.5 Pump prime iteration, AM speed (mph) PPOPSPD 2 Pump prime iteration, off-peak speed (mph) PPPMSPD 2 Pump prime iteration, PM speed (mph) AMHTIME 8.5 Highway link time in minutes, computed from the pump-prime speeds, AM PMHTIME 8.5 Highway link time in minutes, computed from the pump-prime speeds, PM OPHTIME 8.5 Highway link time in minutes, computed from the pump-prime speeds, OP ALLOWQUE 1 0 or 1 ( 0/ disallow queuing delay / 1 /allow queuing delay)


Link variables on the final loaded-link highway network (i6hwy.net)- continued

<Iter>AMVOL 5 <Iter>, AM estimated volume <Iter>AMVC 7.5 <Iter>, AM estimated volume-to-capacity ratio <Iter>AMVDF 7.5 <Iter>, AM VDF value for the corresponding VC ratio <Iter>AMSPD 8.5 <Iter>, AM speed (mph) <Iter>AMQTIMEPEN 7.5 <Iter> AM Queuing Delay time (min) <Iter>PMVOL 5 <Iter>, PM estimated volume <Iter>PMVC 7.5 <Iter>, PM estimated volume-to-capacity ratio <Iter>PMVDF 7.5 <Iter>, PM VDF value for the corresponding VC ratio <Iter>PMSPD 8.5 <Iter>, PM speed (mph) <Iter>PMQTIMEPEN 7.5 <Iter> PM Queuing Delay time (min) <Iter>OPVOL 5 <Iter>, OP estimated volume <Iter>OPVC 7.5 <Iter>, OP estimated volume-to-capacity ratio <Iter>OPVDF 7.5 <Iter>, OP VDF value for the corresponding VC ratio <Iter>OPSPD 8.5 <Iter>, OP speed (mph) <Iter>OPQTIMEPEN 7.5 <Iter> OP Queuing Delay time (min) <Iter>24VOL 6 <Iter>, daily (24-hour) estimated volume (AAWDT) <Iter>24VMT 12.5 <Iter>, daily (24-hour) estimated vehicle miles of travel

<Iter> = pp, i1, i2,…..i6

Notes: 1. Limit Codes are 0,1 = General Use, 2 = HOV2,3+ only, 3 = HOV 3+ Only, 4 = Truck Prohibited, 5 = Non-Airport

Vehicles Prohibited, 6-8 = (unused), 9 = ‘Transit Only’ link (links used to more accurately depict coded transit routes, but are below the grain of the zone system; these links are not included in the highway assignment process).


Conclusions• Version 2.2 model is now ‘on-line’• TPB is currently responding to 10 requests• Version 2.2 represents an improvement in the

TPB’s travel forecasting practice– Fewer adjustment factors used– Freeway queuing delay is now addressed– More realistic external traffic assumptions used

• Version 2.2 will continue to be monitored and refined, as is the case with any production model

• TPB’s models development activities are continuing: Version 2.3 is in progress

Documents

3/21/08 Ver2.2 Presentation to the TFS 1 Final Version 2.2 Travel Demand Model Documentation Part II Presentation to the TPB Travel Forecasting Subcommittee