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Why Doesn't my Output Vehicle Miles Traveled (VMT) Match my Input VMT?
See More Frequent Questions about MOVES and Related Models . This problem usually occurs when the run specification does not include all possible vehicle and fuel types. MOVES internally allocates the input VMT to each of the source types and fuel types and only reports the VMT for the fuel…
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What does MOVES Assume for Future Year Fleet Fuel Efficiency and Emissions?
See More Frequent Questions about MOVES and Related Models . MOVES reflects all fuel economy and emissions standards that were final as of the model release date. For a list of recent regulations accounted for in the most recent MOVES version, see the see the Overview of EPA’s Motor Vehicle…
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Are the NO Values in the MOVES Output Files Actually NO (Molecular Weight 30), or is the NO Expressed as NO2 (Molecular Weight 46)?
See More Frequent Questions about MOVES and Related Models . The NO values in all versions of MOVES2014 (and MOVES2010b) output files are expressed as NO2 (molecular weight 46). HONO and NOx are also expressed in terms of NO2.
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Does an ethanol producer who sells undenatured ethanol to a U.S. importer who denatures it at the port need to register with EPA under RFS?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . The RFS regulations specify that foreign producers of ethanol for use in transportation fuel, heating oil or jet fuel for import to the US who do not add denaturant to their product, must register under RFS. See 80.1450(b)…
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How does MOVES Calculate CO2 and CO2 Equivalent Emissions?
See More Frequent Questions about MOVES and Related Models . MOVES calculates the energy it takes to operate an onroad vehicle based on energy consumption rates as explained in the technical reports Greenhouse Gas and Energy Consumption Rates for Onroad Vehicles MOVES3 (pdf) (November 2020, EPA-420-R-20-015) and Exhaust Emission Rates…
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What is the Difference Between Extended Idling and Normal Idling? Is it Possible to get Distinct Idling Emission Output for any Vehicle Type? Can this be Done in the Emission Rate Mode, or only Inventory Mode?
See More Frequent Questions about MOVES and Related Models . Extended idling is a distinct emission process defined as the overnight idling of long-haul trucks with sleeper cabs at truck stops and other locations during federally required downtime. During such idling periods, these engines experience unusual loads (televisions, air conditioning…
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How does MOVES Classify Light-Duty Trucks?
See More Frequent Questions about MOVES and Related Models . There are two definitions used in MOVES for light duty trucks. The source use type light duty trucks (sourceTypeID values of 31 or 32) use the Federal Highway Administration (FHWA) VM-1 definition of light duty vehicles used to report vehicle…
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Why Are There No Emissions for the Early and Late Hours of the Day for Certain Source Types?
See More Frequent Questions about MOVES and Related Models . MOVES has no start emissions for the certain source types in certain hours of the day. While we know that a non-zero number of these source types do start late at night, our activity data on these trucks and buses…
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What is the Relationship Between Calendar Year, Model Year, and Age?
See More Frequent Questions about MOVES and Related Models . Model year (modelYearID) corresponds to the year that a group of vehicles in the fleet was produced. Calendar year (yearID) is the analysis year as selected in the ‘Time Spans/Year’ panel of the MOVES GUI. For a given calendar year…
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What are the requirements for a foreign producer who wishes to generate RINs for the renewable fuel they produce?
See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help . Foreign producers who plan to generate RINs must register and conduct a third-party engineering review pursuant to section 80.1450. Additionally, such foreign producers must meet the requirements in section 80.1466 prior to generating any RINs for their fuel…
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What is the Meaning of the MOVESScenarioID Field? What Conditions Must User-Defined MOVESScenarioIDs Meet?
See More Frequent Questions about MOVES and Related Models . The MOVESScenarioID is merely text that is used to label the output rows resulting from a MOVES rates run and is defined in the Scale Panel of the MOVES GUI. You can enter any text you like, as long as…
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What Pollutants are Included in “oxides of nitrogen” in MOVES?
See More Frequent Questions about MOVES and Related Models . The definition of NOx in MOVES (NO + NO2 + HONO) is different than the standard NOx definition of NOx (NO + NO2). This change has been made to correct the exhaust NOx emission in MOVES for potential interference with…
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How are the Number of Weekdays and Weekend Days in each Month Determined in MOVES?
See More Frequent Questions about MOVES and Related Models . For any given month, MOVES assumes that 5 out of every 7 days in the month are ‘weekdays’ and 2 out of every 7 of days in the month are ‘weekend days.’ For example, MOVES assumes that January has (5/7)*31…
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What Drives Seasonal CO Emission Trends?
See More Frequent Questions about MOVES and Related Models . Once a vehicle’s engine/catalyst reaches operating temperature, the ambient temperature has little effect on the emissions performance of the vehicle. These “running” emission rates in MOVES have no temperature adjustment. However, during summer months at warm temperatures, MOVES assumes extensive…
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What is Vehicle Specific Power (VSP)?
See More Frequent Questions about MOVES and Related Models . It is an estimate of the power demand on the engine during driving. It is calculated using the second-by-second speed values in a driving schedule, along with information about the type of vehicle being operated. The VSP is used by…
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