Effects of full-facility variable tolling on traveler behavior : evidence from a panel study of the SR-520 corridor in Seattle.
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2014-10-01
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Abstract:This paper uses a two-stage panel survey approach, with roughly 2,000 respondent households, to analyze the impacts of a federally sponsored variable tolling program on SR-520 in the Seattle region. The focus is on corridor users’ daily travel choices and opinions. Key survey findings include a marked decrease in respondents’ travel in the corridor after tolling, particularly on SR-520, and significant diversion to nearby toll-free I-90. There were also increases in transit mode share in the corridor, while carpooling and telecommuting levels were relatively stable. In the post-tolling survey, respondents registered an overall increase in satisfaction with their commutes and less stress associated with driving. Reported satisfaction with the speed and reliability of individual trips on SR-520 also increased substantially, and personal attitudes shifted slightly in favor of tolling.
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