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Accession Number PB2014-106897
Title Carbon Monoxide Screen for Signalized Intersections: COSIM, Version 4.0--Technical Documentation.
Publication Date Jun 2013
Media Count 20p
Personal Author S. Peters
Abstract Illinois Carbon Monoxide Screen for Intersection Modeling (COSIM) Version 3.0 is a Windows-based computer program currently used by the Illinois Department of Transportation (IDOT) to estimate worst-case carbon monoxide (CO) concentrations near signalized intersections in Illinois. Modeled results from COSIM are based on the U.S. Environmental Protection Agency's (EPA's) mobile source emission model, MOBILE6.2, and roadway dispersion model, CAL3QHC v 2.0. Emission factor (EF) tables derived from MOBILE6.2 are incorporated directly into COSIM's program coding. Recent regulatory changes in mobile source emissions modeling have prompted IDOT to update the EFs used in COSIM with EFs estimated using EPA's Motor Vehicle Emission Simulator (MOVES) mobile source emission model. This report documents the changes made to COSIM, Version 3.0, that allow IDOT to continue to use COSIM (Version 4.0) to estimate worst-case CO concentrations for proposed roadway projects with signalized intersections in 2013 and beyond.
Keywords Carbon monoxide
Carbon Monoxide Screen for Intersection Modeling(COSIM) comp
Computerized simulation
Emission factors
Environmental impact
Exhaust emissions
Highway construction
Highway planning
Illinois
Illinois Department of Transportation(IDOT)
Intersections
Mobile pollution sources
Vehicle air pollution

 
Source Agency Federal Highway Administration
NTIS Subject Category 68A - Air Pollution & Control
50A - Highway Engineering
85H - Road Transportation
43G - Transportation
43F - Environment
Corporate Author Illinois Univ. at Urbana-Champaign. Dept. of Civil and Environmental Engineering.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1419
Contract Number N/A

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