J. Barceló and J. Casas

9th Meeting of the Euro Working Group on Transportation, Bari, Italy, June 2002

Abstract

A common drawback to most of the DTA models is that they do not represent properly spill-back of congestion. Simulation has been suggested as an approach to overcome the problem. The solution approach to DTA would then consist of two components, an analytical method to determine the path dependent flow rates and a simulation based network loading to determine arc volumes. The improvements in software and hardware technologies have made possible to simulate microscopically real networks of sensitive size. This paper describes a heuristic approach to DTA in which two alternative analytical components are used to determine the path flow rates, one based on a stochastic route choice method, and another one based on an approximation to dynamic user equilibrium conditions, while the network loading is done by a microscopic simulation model.

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