United States Department of Transportation
i
Value of travel-time reliability : commuters' route-choice behavior in the Twin Cities, phase 2.
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2012-04-01
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Alternative Title:Oregon Transportation Research and Education Consortium {1590}
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Abstract:Travel-time variability is a noteworthy factor in network performance. It measures the temporal uncertainty
experienced by users in their movement between any two nodes in a network. The importance
of the time variance depends on the penalties incurred by the users. In road networks, travelers
consider the existence of this journey uncertainty in their selection of routes. This choice process
takes into account travel-time variability and other characteristics of the travelers and the road network.
In this complex behavioral response, a feasible decision is spawned based on not only the
amalgamation of attributes, but also on the experience travelers incurred from previous situations.
Over the past several years, the analysis of these behavioral responses (travelers’ route-choices) to
fluctuations in travel-time variability has become a central topic in transportation research. These
have generally been based on theoretical approaches built upon Wardropian equilibrium, or empirical
formulations using Random Utility Theory. This report focuses on the travel behavior of
commuters using Interstate 394 (I-394) and the swapping (bridge) choice behavior of commuters
crossing the Mississippi River in Minneapolis. The inferences of this report are based on collected
Global Positioning System (GPS) tracking data and accompanying surveys. Furthermore, it also
employs two distinct approaches (estimation of Value of Reliability [VOR] and econometric modeling
with travelers’ intrapersonal data) in order to analyze the behavioral responses of two distinct
sets of subjects in the Minneapolis-Saint Paul (Twin Cities) area.
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