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A second-order model for vehicular traffics with local point constraints on the flow

By Boris Andreianov, Carlotta Donadello and Massimiliano Daniele Rosini


In this paper we present a second-order model based on the Aw, Rascle, Zhang model (ARZ) for vehicular traffics subject to point constraints on the flow, its motivation being, for instance, the modeling of traffic lights along a road. We first introduce a definition of entropy solution by choosing a family of entropy pairs analogous to the Kruzhkov entropy pairs for scalar conservation laws; then we apply the wave-front tracking method to prove existence and a priori bounds for the entropy solutions of constrained Cauchy problem for ARZ with initial data of bounded variation and piecewise constant constraints. The case of solutions attaining values at the vacuum is considered. We construct an explicit example to describe some qualitative features of the solutions

Topics: Aw, Hyperbolic systems of partial differential equations with constraints, Rascle, Traffic modeling, Wave-front tracking approximations, Zhang model, Applied Mathematics, Modeling and Simulation
Year: 2016
DOI identifier: 10.1142/S0218202516500172
OAI identifier: oai:iris.unife.it:11392/2356663
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