Input Guidelines for Motor Vehicle Emissions Simulator Model, Volume 2: Practitioners’ Handbook: Project Level Inputs (2015)

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2.0 Overview of MOVES Inputs The MOVES inputs that may be provided for regional-level analysis are shown in Table 2.1. Table 2.1 also summarizes EPA guidance on the use of local data versus “default” or embedded data in the model. The MOVES user has two options for entering local data (User’s Guide, p. 42): • Entering and editing data directly via the Project Data Manager; or • Selecting Manage Input Data Sets to specify specialized user-supplied data to be read by the model during execution. MOVES inputs in this handbook are grouped into four categories: 1) fleet inputs (charac- teristics of the vehicle fleet); 2) link-level inputs (vehicle activity and geometry); 3) off- network characteristics (vehicle activity); and 4) “other” inputs including meteorology, fuels, and emissions control programs. 2-1

Table 2.1 MOVES Project-Level Inputs Category No. MOVES Input MOVES Input Table Description EPA Guidance Fleet 1 Age distribution by vehicle class sourceTypeAgeDistribution Fraction of vehicle population by age (years) for 13 source types Recommends latest state or local age distribution assumptions from SIP or conformity regional analysis, or project-specific data for a project serving a fleet operating only locally 2 Source (vehicle) type population SourceTypeHourFraction Fraction of vehicle-hours of travel by 13 source types, for each link Project-specific data, or consistent with regional source type fractions for the project road type, if traffic on road is determined to be similar to regional mix Link 3 Traffic volume Link Total traffic volume for analysis period, for each link Project-specific data 4 a. Operating mode distributions OR b. Drive cycles OR c. Average speeds opModeDistribution driveScheduleSecondLink a. Percent of time spent in each operating mode bin, by link b. Speed and acceleration by one-second time slice, by link c. Average speed, by link Drive schedules or operating mode distributions from field surveys or modeling are preferred if available 5 Link length Link Length of each link (miles) Not specified 6 Grade Link Average grade of each link (percent) Not specified Off-Network 7 Source type population offNetwork Fraction of vehicle population using facility by 13 source types Data from existing project documentation and/or similar projects 8 Start fraction offNetwork Fraction of total vehicles that start in each hour of the day 9 Extended idle fraction offNetwork Fraction of time spent in extended idle mode by hour (long-haul combo trucks) 10 Parked fraction offNetwork Fraction of time vehicles spend parked in an hour Other 1 Weather – meteorology data zoneMonthHour Ambient temperature and relative humidity for each hour in the modeling scenario Consistent with data used in SIP and conformity analysis and dispersion modeling 2 Inspection and maintenance programs IMCoverage ComplianceFactor Various data describing local I/M program characteristics Recommends review of default data, and substitution of local data if more accurate or recent data are available 3 Fuel formulation and supply fuelFormulation fuelSupply Various data describing local fuel supply Begin with embedded data and revise as needed 2-2