Updated Version 5/26
Testing of EPA’S MOVES Model
Travel Management Subcommittee
May 26, 2009
MOVES: Motor Vehicle Emission Simulator
COG DTP/DEP Staff
Eulalie Lucas and Erin Morrow DTP
Sunil Kumar DEP
MOVES Major Components
Action
Geography
Jurisdiction or state level results available. Regional
possible
Time Spans
No change. Energy /emission output available by hour of the
day, and month for calendar years 1990 and 1999
through 2050, with options to run at more aggregate
month or year levels. Same as ozone, winter day and
seasonal (annual)
Sources
Requires conversion to thirteen vehicle types. VMT by
HPMS types and MOVES VMT percent mix by
MOVES facility types
Outputs and Pollutant Emissions
No change. N2O, CH4, Atmospheric CO2, CO2 equivalent,
total gaseous hydrocarbons, VOC,CO, NOx, and several
forms of particulate matter (PM).
Emission Processes
Some change. Running, start, extended idle (e.g. heavy-duty
truck (“hoteling”), well-to-pump, brakewear, tirewear,
(evaporative permeation, evaporative fuel vapor
venting, and evaporative fuel leaks) similar to diurnal
and resting loss emissions
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Transition – Mobile6.2 To MOVES & Local Data Needs
 Required Local Datasets
 Fuel Characteristics
 Meteorology
 I/M Program
 Age Distribution (Registration data)
 Population of MOVES Vehicle Types
(for each county in a calendar year)
 Total Base Year VMT for HPMS Vehicle Types
(for each county in a calendar year)
 VMT Fraction for MOVES Road Types and MOVES Vehicle Types
(VMT fraction across MOVES road types for individual MOVES vehicle types for
each county in a calendar year)
 Speed Distribution (fraction of time spent in 16 speed-bins every hour
for 24 hours for different road types and MOVES vehicle types)
(Default data available, local data substitution possible)
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Vehicle Population
by MOVES Vehicle Types
MOBILE & MOVES Vehicle Types
MOBILE6 Vehicle Types
Veh
Type
MOVES Veh Type
Description
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Motorcycle
Light-Duty Trucks 1 (0-6,000 lbs. GVWR, 0-3,750 lbs. LVW)
21
Passenger Car
LDT2
Light-Duty Trucks 2 (0-6,000 lbs. GVWR, 3,751-5,750 lbs. LVW)
31
Passenger Truck
LDT3
Light-Duty Trucks 3 (6,001-8,500 lbs. GVWR, 0-5,750 lbs. ALVW)
32
Light Commercial Truck
5
LDT4
Light-Duty Trucks 4 (6,001-8,500 lbs. GVWR, 5,751 lbs. and greater
ALVW)
41
Intercity Bus
6
HDV2B
Class 2b Heavy-Duty Vehicles (8,501-10,000 lbs. GVWR)
42
Transit Bus
7
HDV3
Class 3 Heavy-Duty Vehicles (10,001-14,000 lbs. GVWR)
8
HDV4
Class 4 Heavy-Duty Vehicles (14,001-16,000 lbs. GVWR)
43
School Bus
9
HDV5
Class 5 Heavy-Duty Vehicles (16,001-19,500 lbs. GVWR)
51
Refuse Truck
10
HDV6
Class 6 Heavy-Duty Vehicles (19,501-26,000 lbs. GVWR)
52
Single Unit Short-Haul Truck
11
HDV7
Class 7 Heavy-Duty Vehicles (26,001-33,000 lbs. GVWR)
53
Single Unit Long-Haul Truck
12
HDV8A
Class 8a Heavy-Duty Vehicles (33,001-60,000 lbs. GVWR)
13
HDV8B
Class 8b Heavy-Duty Vehicles (>60,000 lbs. GVWR)
54
Motorhome
14
HDBS
School Buses
61
Combination Short-Haul Truck
15
HDBT
Transit and Urban Buses
16
MC
Motorcycles (All)
62
Combination Long-Haul Truck
1
LDV
Light-Duty Vehicles (Passenger Cars)
2
LDT1
3
4
Data color coded to show conversion process
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MOVES and DTP Facility Types and Annual VMT
Annual VMT by Facility Types used in DTP modeling-current
process
Freeways
Major Arterials
Minor Arterials
Collectors
Expressway
Local and Ramps
Annual VMT by HPMS Vehicle Types-MOVES
process
1
Motorcycle
2
Passenger Car
3
Other 2 axle-4 tire vehicles
4
Single Unit Trucks
5
Bus
6
Single Unit Trucks
5
VMT Fraction for MOVES Road Types and MOVES Vehicle
Types
Currently COG/DTP allocate VMT fractions for:
 Network traffic
Local Roads
Auto Access to transit
** VMT fractions not allocated by vehicle type
MOVES Facility Type Definition
1
Locations which are off of the highway network
2
Rural restricted access roadways (i.e. freeways and interstates)
3
Rural roads to which vehicle access is unrestricted
4
Urban restricted access roadways (i.e. freeways and interstates)
5
Urban roads to which vehicle access is unrestricted
6
Tests executed to date
MOVES Inputs (County, State or
Regional Level)
Local Data
Default
Ramp Fraction (portion of roadway)
assigned to ramps
Local can be used
yes
Road Type Distribution
% of VMT by MOVES road and vehicle
types. Need to be converted.
yes
Source Type Population
Data can be converted to MOVES types
yes
Vehicle Type VMT
Need total VMT by HPMS vehicle types.
Need to be converted
yes
Age Distribution
Local data was converted
Average Speed Distribution **
No local data currently formatted
Fuel Supply
Local data was converted
Meteorology Data
Local data was converted
MOVES Inputs (Project Level)
Local Data
yes
Default
Operating Mode Distribution
For project level analysis
yes
Link Source Type
For project level analysis
yes
Link Drive Schedules
For project level analysis
yes
Off-Network vehicles
For project level analysis
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** MOVES uses a time-based distribution, whereas MOBILE6.2 used a VMT-Based speed distribution.
Feedback from Air Agency Staff
• VDEQ:
The MOVES format for input files is definitely very different from that used
for MOBILE6. It will take some time to become comfortable with the new
format and confident in the results produced
Created database containing locality-specific input data for 3 counties in
various parts of the state. Used 3 separate databases and 3 separate
RunSpecs since MOVES only allows you to generate emissions for one
county at a time. (EPA plans to add batch processing in the final model.)
Encountered issues with emission calculations using different time
aggregation options in the model. Emissions generated using the hourly time
aggregation are considerably lower than those generated using a monthly
time aggregation. Comments and sample files to EPA and their contractor is
working through the issue.
• MDE:
Using HPMS VMT, vehicle and road types.
Completed runs. Gaining more experience will use locality specific data when
conversion is completed.
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Considerations

MOVES default input database or jurisdiction specific data.

Level of detail for reporting emissions (trip component or total
emissions)

MOVES post-processor or COG/TPB post-processor

The use of an averaged emission rate may not be possible

Formation of a technical/policy group to decide on technical and
policy items as they relate to MOVES implementation and
application.
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Work Plan
 Review MOVES model inputs and discuss with agencies
 Test model using default values
 Develop inputs using local data
 Apply model using local data
 Compare MOVES results by pollutant with MOBILE6 runs.
 Develop transportation and air agency signoff on process for
MOVES inputs and overall process
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DTP/DEP MOVES Schedule
June 2009
Test MOVES model with local data
June 29 to June 30th 2009
MOVES training scheduled (details to follow)
Location: MWCOG
MOVES website
http://www.epa.gov/otaq/models/moves/index.htm
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