Illinois Carbon Monoxide Screen for Intersection Modeling (COSIM) 2012 Update

Illinois Carbon Monoxide Screen for Intersection Modelin (COSIM) Version 3.0 is a Window 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 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. IDOT will be required to use EFs estimated using EPA's Office of Transportation and Air Quality Motor Vehicle Emission Simulator (MOVES) for hot spot transportation conformity analyses. This project will revise the current set of CO EF tables in COSIM using MOVES. This will allow IDOT to continue the use of COSIM to estimate worst-case CO concentrations for proposed roadway projects with signalized intersections in late 2012, and beyond.


    • English


    • Status: Completed
    • Contract Numbers:


    • Sponsor Organizations:

      Illinois Department of Transportation

      Bureau of Materials and Physical Research
      126 East Ash Street
      Springfield, IL  United States  62704-4766
    • Performing Organizations:

      University of Illinois, Urbana-Champaign

      Department of Civil and Environmental Engineering
      205 North Mathews Avenue
      Urbana, IL  United States  61801-2352
    • Principal Investigators:

      Peters, Scott

    • Start Date: 20120601
    • Expected Completion Date: 0
    • Actual Completion Date: 20130430
    • Source Data: RiP Project 33413

    Subject/Index Terms

    Filing Info

    • Accession Number: 01479986
    • Record Type: Research project
    • Source Agency: Illinois Department of Transportation
    • Contract Numbers: R27-SP21
    • Files: RiP, STATEDOT
    • Created Date: Apr 27 2013 1:01AM