Methodology for Determining Vehicle Usage and Speeds for Mobile Source Emissions Inventories

by Matthew M. de Rouville, Coordinator of Technical Consulting; Services, Baltimore, United States,

Document Type: Proceeding Paper

Part of: Microcomputers in Transportation


This paper was published by the Baltimore Regional Council of Governments to document its work in preparing data from its regional road model for input into a computer emissions inventory model, MOBILE4. The Regional Council, under contract to the Maryland Department of the Environment (MDE), was requested to produce data on vehicle miles of travel (VMT) and speeds which the MDE would then enter into the MOBILE4 model. Providing these data to MDE required much computer processing. The Regional Council used its MINUTP transportation modeling software to run a regional model simulating travel in 1987. Data from the model were then exported to dBASE IV for further processing as detailed in the report. The resulting data files were then supplied to MDE in the format it requested. This paper provides a complete description of the computer work performed during this study. Included in this paper are the steps taken for manual calculation of VMT and speeds for the two counties not in the regional transportation model.

Subject Headings: Computer models | Traffic models | Simulation models | Inventories | Emissions | Traffic surveillance | Highways and roads | Baltimore | Maryland | United States

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