Improving our Understanding of How Highway Congestion and Price Affect Travel Demand

Driver response to congestion and road pricing is an essential element to forecasting the future use of roadway systems and estimating the effect that pricing has on demand and route choice. Though many studies have been conducted in the past and revenue studies are routinely done for proposed toll roads, there is still a need for improving the behavioral basis for forecast. The objective of this project was to develop mathematical descriptions of the full range of highway user behavioral responses to congestion, travel time reliability, and pricing. These descriptions were achieved by mining existing data sets. The report estimates a series of nine utility equations, progressively adding variables of interest. This research explores the effect on demand and route choice of demographic characteristics, car occupancy, value of travel time, value of travel time reliability, situational variability, and an observed toll aversion bias. The primary audience for this research is professionals who develop travel demand and traffic forecasts. Policy makers may also have an interest in the behavioral findings that could have policy implications.

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  • Corporate Authors:

    Parsons Brinckerhoff

    333 7th Avenue, 15th Floor
    New York, NY  United States  10001

    Northwestern University, Evanston

    1936 Shendan Road
    Evanston, IL  United States  60208

    Mark Bradley Research and Consulting

    524 Arroyo Avenue
    Santa Barbara, CA  United States  93109

    University of California, Irvine

    Irvine, CA  United States 

    Resource Systems Group, Incorporated

    55 Railroad Row
    White River Junction, VT  United States  05001

    University of Texas at Austin

    Austin, TX  United States  78712

    GeoStats LP

    530 Means Street NW, Suite 310
    Atlanta, GA  United States  30318
  • Authors:
    • Koppelman, Frank
  • Publication Date: 2013


  • English

Media Info

  • Media Type: Web
  • Features: Appendices; Figures; References; Tables;
  • Pagination: 193p
  • Serial:
  • Publication flags:

    Open Access (libre)

Subject/Index Terms

Filing Info

  • Accession Number: 01468530
  • Record Type: Publication
  • ISBN: 9780309129695
  • Report/Paper Numbers: SHRP 2 Report S2-C04-RW-1
  • Files: TRIS, TRB, ATRI
  • Created Date: Jan 3 2013 8:33AM