Network-Optimized Road Pricing: Part I: A Parable and a Model

Robert B. Dial
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Robert B. Dial: Volpe National Transportation Systems Center, Cambridge, Massachusetts

Operations Research, 1999, vol. 47, issue 1, 54-64

Abstract: Part I of a two-part series, this paper recites a parable and formulates a stochastic optimization model that determines optimal link tolls on a road network whose users' value of time is a random variable. The parable, introducing the problem, demonstrates the importance of the variability of the value of time. The model, cast as a variational inequality, becomes a specialized form of a bicriterion user-equilibrium traffic assignment. Its solution is a set of efficient tolls for all links in the network. These tolls induce an equilibrium traffic flow that is at once system-optimal and user-optimal—for all trips, regardless of their value of time. Part II develops a solution algorithm, gives examples, and provides performance statistics.

Keywords: transportation; toll-road planning; determining optimal toll policy; network optimization; stochastic modeling (search for similar items in EconPapers)
Date: 1999
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Citations: View citations in EconPapers (19)

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