Waiting Tolerance: Ramp Delay Vs. Freeway Congestion
Traffic Psychology and Behaviour, Vol. 9, No. 1, pp. 1-13, January 2006
31 Pages Posted: 12 Feb 2008
Waiting tolerance at ramp meters and travel time on the freewaywere measured using a computer administered stated preference (CASP) survey and a virtual experience stated preference (VESP) methodemploying 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.
Keywords: Ramp meters, Personality, Stated preference, Driving simulator, Travel time
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