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Waiting Tolerance: Ramp Delay vs. Freeway Congestion

Listed author(s):
  • David Levinson


    (Nexus (Networks, Economics, and Urban Systems) Research Group, Department of Civil Engineering, University of Minnesota)

  • Kathleen Harder
  • John Bloomfield

    (College of Architecture and Landscape Architecture, University of Minnesota)

  • Kathy Carlson

Waiting tolerance at ramp meters and travel time on the freeway were measured using a computer administered stated preference (CASP) survey and a virtual experience stated preference (VESP) method employing a driving simulator.The selections varied in the number of minutes waiting at a ramp meter with vehicle speed once on the freeway. The subjects ranked the selections in order of preference. The results were statistically analyzed using a binary logit model controlling for demographics, socioeconomic characteristics, daily travel time, and personality scores.The results by the CASP method displayed a preference for freeway congestion to ramp delay, but opposite results were obtained by the VESP method. A number of reasons are posited to explain the difference, but the results indicate that method of stated preference data collection can significantly affect conclusions drawn.

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File Function: First version, 2007
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Paper provided by University of Minnesota: Nexus Research Group in its series Working Papers with number 200602.

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Date of creation: 2006
Publication status: Published in Transportation Research part F: Traffic Psychology and Behaviour Volume 9, Issue 1 , January 2006, Pages 1-13. [
Handle: RePEc:nex:wpaper:waitingtolerance
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