United States Department of Transportation
i
MOVES3 Sensitivity Analysis
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2023-04-01
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[PDF-4.73 MB]
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Abstract:This analysis tested the sensitivity of the latest version of the U.S. Environmental Protection Agency’s Motor Vehicle Emissions Simulator (MOVES), MOVES3, to various inputs. The analysis focuses on the following county level inputs: hotelling, off-network idle (ONI), average speed distribution, and age distribution as well as additional specific inventory focus areas (light-duty versus heavy-duty vehicles, off-network versus restricted versus unrestricted road types, and urban versus rural road types) in response to the changes made to the four inputs. Sensitivity of each input was assessed by evaluating the range of percent changes of different testing scenarios compared to a reference case emissions inventory. Results showed that age distribution and speed distribution have the greatest sensitivities across the chosen pollutant emission inventories, while ONI and hotelling have modest sensitivities. The results of this sensitivity testing may be of interest to those using MOVES to model onroad emissions of criteria pollutants, air toxics, and greenhouse gases.
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