Paola Goatin Institut National de Recherche en Informatique Automatique (INRIA) Conservation laws with non-local flux have been recently introduced in traffic modeling to account for the reaction of drivers to the surrounding density of other individuals. In this talk, I will consider a modified Lighthill-Whitham-Richards model, in which the mean velocity depends on a weighted mean of the downstream car density. I will show how to prove the model well-posedness, relying on the convergence of approximate solutions constructed by an adapted finite volume scheme. I will also show how to derive the model as micro-macro limit of a finite dimensional dynamical system with metric interaction. (joint work with S. Blandin, F. Rossi and S. Scialanga)