A coupled PDE-ODE model for bounded acceleration in macroscopic traffic flow models

Nicolas Laurent-Brouty (1, 2, 3) , Guillaume Costeseque (1, 2, 3) , Paola Goatin (1, 2, 3)

1 LJAD - Laboratoire Jean Alexandre Dieudonné
2 ACUMES - Analysis and Control of Unsteady Models for Engineering Sciences
3 COMUE UCA - COMUE Université Côte d'Azur (2015-2019)

In this paper, we propose a new mathematical model accounting for the boundedness of traffic acceleration at a macroscopic scale. Our model is built on a first order macroscopic PDE model coupled with an ODE describing the trajectory of the leader of a platoon accelerating at a given constant rate. We use Wave Front Tracking techniques to construct approximate solutions to the Initial Value Problem. We present some numerical examples including the case of successive traffic signals on an arterial road and we compare the solution to our model with the solution given by the classical LWR equation in order to evaluate the impact of bounded acceleration.

Mots clés: PDE-ODE coupling; Bounded acceleration; macroscopic traffic flow model; wave front tracking scheme

Domaines: Analyse numérique [math.NA]

Nicolas Laurent-Brouty, Guillaume Costeseque, Paola Goatin. A coupled PDE-ODE model for bounded acceleration in macroscopic traffic flow models. IFAC-PapersOnLine, 2018, 51 (9), pp.37-42. ⟨hal-01636156v4⟩