Evaluate the Interactions between Transportation-Related Particulate Matter, Ozone, Air Toxics, Climate Change, and Other Air-Pollutant Control Strategies

The objectives of this study are to provide transportation officials with information on the effects of different transportation air quality control strategies on a full range of pollutants, and to identify methods for evaluating tradeoffs among different pollutants when selecting control strategies. The study first assesses the effectiveness and cost-effectiveness of a variety of transportation emission control strategies at reducing emissions of various pollutants, including ozone precursors, particulate matter (PM), air toxics, and greenhouse gases (GHG); and identifies which strategies may reduce some pollutants while increasing others. A total of 34 control strategies are reviewed in three categories – transportation demand management (TDM), transportation systems management (TSM), and vehicle and fuel technology. The study also includes: A review of different pollutant weighting systems used by agencies and researchers in evaluating projects across multiple pollutants; A survey of how state and regional transportation and air quality agencies have evaluated cost-effectiveness, considering multiple pollutants, and made tradeoffs among these pollutants when prioritizing control strategies; and Information gaps and research needs to assist agencies in selecting the most cost-effective control strategies, considering their potential impact on multiple pollutants.

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  • Summary URL:
  • Supplemental Notes:
    • This study was requested by the American Association of State Highway and Transportation Officials (AASHTO), and conducted as part of the National Cooperative Highway Research Program (NCHRP) Project 25-25. Project 25-25 is intended to fund quick response studies on behalf of the AASHTO Standing Committee on the Environment.
  • Corporate Authors:

    Cambridge Systematics, Incorporated

    100 Cambridge Park Drive, Suite 400
    Cambridge, MA  United States  02140

    Eastern Research Group, Incorporated

    Austin, TX  United States 
  • Authors:
    • Porter, Christopher
    • Kall, David
    • Selin, Tracy
    • Baker, Rick
    • Kishan, Sandeep
    • Preusse, Diane
    • Stanard, Alan
  • Publication Date: 2010-7-19


  • English

Media Info

  • Media Type: Digital/other
  • Features: Appendices; Figures; Tables;
  • Pagination: 157p

Subject/Index Terms

Filing Info

  • Accession Number: 01497106
  • Record Type: Publication
  • Report/Paper Numbers: NCHRP 25-25 Task 59
  • Files: TRIS
  • Created Date: Oct 29 2013 10:22AM