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2015 A junction condition by specified homogenization and application to traffic lights
Giulio Galise, Cyril Imbert, Régis Monneau
Anal. PDE 8(8): 1891-1929 (2015). DOI: 10.2140/apde.2015.8.1891


Given a coercive Hamiltonian which is quasiconvex with respect to the gradient variable and periodic with respect to time and space, at least “far away from the origin”, we consider the solution of the Cauchy problem of the corresponding Hamilton–Jacobi equation posed on the real line. Compact perturbations of coercive periodic quasiconvex Hamiltonians enter into this framework, for example. We prove that the rescaled solution converges towards the solution of the expected effective Hamilton–Jacobi equation, but whose “flux” at the origin is “limited” in a sense made precise by Imbert and Monneau. In other words, the homogenization of such a Hamilton–Jacobi equation yields to supplement the expected homogenized Hamilton–Jacobi equation with a junction condition at the single discontinuous point of the effective Hamiltonian. We also illustrate possible applications of such a result by deriving, for a traffic flow problem, the effective flux limiter generated by the presence of a finite number of traffic lights on an ideal road. We also provide meaningful qualitative properties of the effective limiter.


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Giulio Galise. Cyril Imbert. Régis Monneau. "A junction condition by specified homogenization and application to traffic lights." Anal. PDE 8 (8) 1891 - 1929, 2015.


Received: 8 September 2014; Revised: 16 March 2015; Accepted: 11 May 2015; Published: 2015
First available in Project Euclid: 16 November 2017

zbMATH: 1331.35034
MathSciNet: MR3441209
Digital Object Identifier: 10.2140/apde.2015.8.1891

Primary: 35B27, 35F21, 49L25

Rights: Copyright © 2015 Mathematical Sciences Publishers


Vol.8 • No. 8 • 2015
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