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Marginal cost pricing for system optimal traffic assignment with recourse under supply-side uncertainty

Rambha, Tarun and Boyles, Stephen D and Unnikrishnan, Avinash and Stone, Peter (2018) Marginal cost pricing for system optimal traffic assignment with recourse under supply-side uncertainty. In: TRANSPORTATION RESEARCH PART B-METHODOLOGICAL, 110 . pp. 104-121.

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Official URL: http://dx.doi.org/10.1016/j.trb.2018.02.008

Abstract

Transportation networks are often subject to fluctuations in supply-side parameters such as capacity and free-flow travel time due to factors such as incidents, poor weather, and bottlenecks. In such scenarios, assuming that network arcs exist in a finite number of states with different delay functions with different probabilities, a marginal cost pricing scheme that leads to a socially optimal outcome is proposed. The suggested framework makes the behavioral assumption that travelers do not just choose paths but follow routing policies that respond to en route information. Specifically, it is assumed that travelers are fully-rational and that they compute the optimal online shortest path assuming full reset. However, such policies may involve cycling, which is unrealistic in practice. Hence, a network transformation that helps restrict cycles up to a certain length is devised and the problem is reformulated as a convex optimization problem with symmetric delay functions. The results of numerical tests on the Sioux Falls test network are presented using the Frank-Wolfe algorithm. (C) 2018 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Additional Information: Copy right for this article belong to PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Depositing User: Id for Latest eprints
Date Deposited: 04 May 2018 18:47
Last Modified: 04 May 2018 18:47
URI: http://eprints.iisc.ac.in/id/eprint/59756

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