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原文传递 Carbon Monoxide Screen for Signalized Intersections COSIM, Version 3.0: Technical Documentation.

题名：	Carbon Monoxide Screen for Signalized Intersections COSIM, Version 3.0: Technical Documentation.
作者：	S. Peters;
关键词：	carbon monoxide,highway planning;traffic volume, highway construction, vehicle air pollution, highway environmental impact, mobile pollutant sources, emission factors, exhaust emissions, screening, computerized simulation;
摘要：	The Illinois Department of Transportation (IDOT) currently uses the computer screening model Illinois CO Screen for Intersection Modeling (COSIM) to estimate worst-case CO concentrations for proposed roadway projects affecting signalized intersections. The original model was developed as part of the Illinois Transportation Research Center (ITRC) research project IIIA-H1, FY 97, completed in October 1999. Modeled results from Version 1.0 and 1.1 of COSIM are based on the U.S. Environmental Protection Agency's (USEPA) mobile source emission model, MOBILE5b, and roadway dispersion model, CAL3QHC v 2.0. The second version of COSIM was released in 2003. Version 2.0 incorporated new emission factor (EF) tables developed using USEPA's updated version of the MOBILE model called MOBILE6. In addition to updating the emission factors used in COSIM, pre-screen criteria for determining when COSIM needs to be used for a roadway project were developed and incorporated into COSIM as a Pre-Screen feature. In 2007, regulatory changes in the Illinois vehicle Inspection and Maintenance (I&M) program prompted the Illinois Environmental Protection Agency (IEPA) to recommend that IDOT update COSIM with new EF tables using the MOBILE6.2 model. Based on this recommendation, IDOT and the Illinois Center for Transportation (ICT) provided funding to update the COSIM model. As part of the update, IDOT also requested that the methodology used in creating the original Pre-Screen criteria be reevaluated and possibly revised based on the findings of the evaluation. This report provides technical documentation on the updates and revisions made to Version 3.0 of COSIM finalized in June 2008. / Title Note: Tech. documentation. / Supplementary Notes: See also PB2004-100844. Sponsored by Illinois State Dept. of Transportation, Springfield. Bureau of Materials and Physical Research. and Federal Highway Administration, Springfield, IL. Illinois Div. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA. / NTIS Prices: PC A04 / NTIS In-house Control Codes: dotfha/iuu;12091,1101 &C / Monitor Agency Acronym: ICT / Monitor Agency Number: 08-019 / Corporate Author Code: 034597013 / Classifivation: Unclassified report
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