Diesel Emissions Quantifier
Default Values
&EPA
United States
Environmental Protection
Agency
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Diesel Emissions Quantifier
Default Values
Transportation and Regional Programs Division
Office of Transportation and Air Quality
U.S. Environmental Protection Agency
NOTICE
This technical report does not necessarily represent final EPA decisions or
positions. It is intended to present technical analysis of issues using data
that are currently available. The purpose in the release of such reports is to
facilitate the exchange of technical information and to inform the public of
technical developments.
&EPA
United States
Environmental Protection
Agency
EPA-420-B-10-035
August 2010
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Diesel Emissions Quantifier Default Values
The purpose of this document is to provide users of the Diesel Emissions Quantifier (DEQ) with
default values for certain input fields. However, the use of "real world" data for these fields will
provide a more accurate assessment of emission reductions and is strongly encouraged.
(On Highway
Vehicle Type
School Bus
Transit Bus
Refuse Hauler
Short Haul
Truck
Long Haul
Truck
Delivery Truck
(beverage,
bulk, etc.)
Emergency
Vehicle (fire
truck,
ambulance,
etc.)
City/County
Vehicle (utility,
DOT type
truck)
Vehicle
Class
School Bus
Transit Bus
Class 7
Class 5, 6, or
7
Class 8
Class 5, 6, or
7
Class 5, 6, of
7
Class 5, or6
VMT/
(mi/yr)
13,000
35,000 -
40,000
45,149
See Table 1b
100,000
See Table 1b
See Table 1b
See Table 1b
Fuel use
(gal/yr)
1,597
5,000-
5,700
6,060
See
Table 1b
16,667
See
Table 1b
See
Table 1b
See
Table 1b
Idling
hours
(hr/yr)
270
600a
730
730
2,400
730
b
b
NCDC Cost Effectiveness
Report, MOBILE6, Clean
School Bus USA Program
Federal Transit Association,
American Public Transportation
Association, California Air
Resources Board
MOBILE6, SmartWay Program,
SmartWay Fleet Model
MOBILE6, SmartWay Program,
SmartWay Fleet Model
SmartWay Program, SmartWay
Fleet Model
MOBILE6
MOBILE6
MOBILE6
Table 1 a. Default values for certain fields in the Diesel Emissions Quantifier. See figure 1 at the
end of this document for a visual description of vehicles by class.
3 This value is based on rough information from a variety of sources and is subject to change as
more accurate data becomes available.
b Due to the uncertainty of time an emergency vehicle is at a particular location and the variety of
city/county vehicles, it is not possible to estimate default idling hours for these vehicle types.
Vehicle
Type
Class 5
Class 6
Class 7
VMT/
(mi/yr)
19,610
45,149
45,149
Fuel use (gal/yr)
2,448
5,526
6,060
Sources
MOBILE6
MOBILE6
MOBILE6
Table 1 b. Default values for certain fields in the Diesel Emissions Quantifier.
Last updated: 3/2/2009
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Diesel Emissions Quantifier Default Values
Nonroad
Vehicle Type
Usage rate
(hr/yr)
Power
(Hp)c
Fuel use
(gal/yr)
Source
Agriculture
2-wheel tractor
Agricultural
Mowers
Agricultural
Tractors
Balers
Combines
Irrigation Sets
Off-Highway
Tractors
Off-Highway
Trucks
Other Ag
Equipment
Sprayers
Swathers
544
363
475
95
150
749
855
1641
381
90
110
11
100
175
75
300
100
750
750
175
175
100
148
944
1,855
254
848
1,716
22,584
43,422
1,912
438
330
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
Ports and Airports
AC Refrigeration
Aerial Lifts
Airport Support
Equipment
Cranes
Forklifts
Off-Highway
Tractors
Off-Highway
Trucks
Other Construction
Equipment
Other General
Industrial
Equipment
Other Material
Handling
Equipment
Signal Boards
Skid Steer
Loaders
Terminal Tractors
1341
384
732
990
1700
855
1641
606
878
421
535
818
1257
50
50
175
175
75
750
750
300
100
175
25
75
175
1491
277
4,354
4,403
5,429
22,584
43,422
6,012
1,841
674
265
578
6,780
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
Rail
Aerial Lifts
Cranes
Forklifts
Line Haul
Locomotive
384
990
1700
4350
50
175
75
2000
277
4,403
5,429
27,150
NONROAD model
NONROAD model
NONROAD model
NONROAD model
Last updated: 3/2/2009
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Diesel Emissions Quantifier Default Values
Vehicle Type
Off-Highway
Trucks
Off-Highway
Tractors
Other General
Industrial
Equipment
Other Materials
Handling
Equipment
Passenger
Locomotive
Switch Locomotive
Terminal Tractor
Usage rate
(hr/yr)
1641
855
878
421
4350
4450
1257
Power
(Hp)c
750
750
100
175
2000
2000
175
Fuel use
(gal/yr)
43,422
22,584
1,841
674
27,150
22,250
6,780
Source
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
Construction
Bore/Drill Rigs
Cement & Mixers
Cranes
Crawler Tractors
Crushing/Proc.
Equipment
Dumpers/Tenders
Excavators
Forklifts
Graders
Off-Highway
Tractors
Off-Highway
Trucks
Other Construction
Equipment
Pavers
Paving Equipment
Plate Compactors
Rollers
Rough Terrain
Forklifts
Rubber Tire
Loaders
Scrapers
Signal Boards
Skid Steer
Loaders
Tractor/Loader/Ba
ckhoe
466
275
990
936
955
566
1092
1700
962
855
1641
606
821
622
484
760
662
761
914
535
818
1135
175
75
175
175
16
300
175
75
300
750
750
300
175
175
6
100
75
175
600
25
75
100
1,955
137
4,403
8,887
3,115
284
6,063
5,429
6,175
22,584
43,422
6,012
2,980
1,473
82
2,216
2,042
5,721
11,086
265
578
1,472
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
NONROAD model
Table 2. Default values for certain fields in the Diesel Emissions Quantifier.
c In the NONROAD model, the horsepower range for an individual application can vary greatly.
To simplify this, the horsepower of the highest population application will be employed.
Last updated: 3/2/2009
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Diesel Emissions Quantifier Default Values
Figure 1. Truck Types by gross vehicle weight.
i oy u v w mto the eight track classes shown in Fig. 3.1.
M.nivan Utility van
CLASS 1
6.0OO Ib & less
Full-size piokup
CLASS 2
6.001 to 10.000 tb
Fun-sire pickup Step van
Walk-in Conventional van
CLASS 3
10,001 to 14.000 to
City d«liv»ry
Con,enfcr,Slvan Crty dd-very CLASS 4
14,001 to 16,000 Ib
Ceme CLASS 8
33.0O1 Ib & over
conventional CO6 sleeper
Fig. 3.1. Truck types by gross vehicle weigh! (GVW). Source: Commercial Carrier Journal
(http://www.ccjmagazine.com).
Last updated: 3/2/2009
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