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The Center for Air Quality StudiesEnvironment and Air Quality Division
Developing Performance Measures for Sustainable
Freight Movement
Joe Zietsman, Ph.D., [email protected]
Texas Transportation Institute
April 18, 2012
The Center for Air Quality StudiesEnvironment and Air Quality Division
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The Center for Air Quality StudiesEnvironment and Air Quality Division
HUMAN NEEDS
ECO
NO
MIC
DEV
ELO
PMEN
T AN
D P
ROSP
ERIT
Y
COM
MU
NIT
Y H
EALT
H A
ND
VIT
ALI
TY
ENVI
RON
MEN
TAL
AND
ECO
LOG
ICAL
SYS
TEM
S
EQUITYEQUITY
EQUITYEQUITY
The Center for Air Quality StudiesEnvironment and Air Quality Division
Extended Truck Idling
• 500,000 long haul trucks
• Rest 10h for every 14h of driving
• 350 tons of NOx per day
• 2 million gallons of diesel per day
The Center for Air Quality StudiesEnvironment and Air Quality Division
Mobile (On-Board)
The Center for Air Quality StudiesEnvironment and Air Quality Division
Stationary (Off-Board )
The Center for Air Quality StudiesEnvironment and Air Quality Division
Combination (Mobile and Stationary)
The Center for Air Quality StudiesEnvironment and Air Quality Division
Large Truck Stops
The Center for Air Quality StudiesEnvironment and Air Quality Division
National Truck Corridors
The Center for Air Quality StudiesEnvironment and Air Quality Division
Evaluation Criteria
Number Measure Description
1 Corridor length From origin to destination
2 Major activity centers Activity centers such as major urbanized areas
3 Average daily truck volume Class 8 truck volume
4 Truck traffic growth rates Estimated annual truck growth rate
5 Non-attainment areas Number of ozone and PM nonattainment areas
6 Existing TSE sites Existing TSE sites
7 Number of truck stops Number of truck stops with more than 75 spaces
8 Corridor temperature % corridor above 900F or below 400F
9 Number of major intersections Number of major freeway to freeway interchanges
The Center for Air Quality StudiesEnvironment and Air Quality Division
The Center for Air Quality StudiesEnvironment and Air Quality Division
The Center for Air Quality StudiesEnvironment and Air Quality Division
The Center for Air Quality StudiesEnvironment and Air Quality Division
Mobile Idle Reduction Technologies
Hea
ting
Cooling
Electricity
APU’sDiesel, Battery, Hybrid
Fuel Operated Heaters
Thermal StorageCooling
The Center for Air Quality StudiesEnvironment and Air Quality Division
Environmental and Emissions Research Facility (EERF)
The Center for Air Quality StudiesEnvironment and Air Quality Division
• 75′ X 23′ X 22′• Temperature range
– -40 130 ºF– RH up to 70% at 105 ºF
• Solar load– Up to 1100 watt/m2 14000 Lux
• Wind load– Up to 35 mph
Chamber Specifications
The Center for Air Quality StudiesEnvironment and Air Quality Division
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The Center for Air Quality StudiesEnvironment and Air Quality Division
The Center for Air Quality StudiesEnvironment and Air Quality Division
Installation Example
The Center for Air Quality StudiesEnvironment and Air Quality Division
Fuel Consumption and Emissions (Hot Test)% of Base Truck
The Center for Air Quality StudiesEnvironment and Air Quality Division
Fuel Consumption and Emissions (Cold Test)% of Base Truck
The Center for Air Quality StudiesEnvironment and Air Quality Division
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Infiltration(a) (b)
(c) (d)
NO Concentration Distribution in the Section Plane through the Driver’s Seat in the APU Test Conditions at Physical Time of (a) 10 s, (b) 300 s, (c) 600 s and (d) 3600 s
The Center for Air Quality StudiesEnvironment and Air Quality Division
Future Vision• Mobile Chassis Dyno
The Center for Air Quality StudiesEnvironment and Air Quality Division
Concluding Remarks
• Sustainability is an important framework• NCHRP 708 puts it all together• Truck idling is a significant source• National deployment strategy for TSE• Protocol for APU testing• Broad range of testing• Basis for effective policies
