Towards an hybrid macro-micro traffic flow simulation model

This paper presents recent advances in the development of a new traffic flow simulation concept, which consists in using jointly a macroscopic and a microscopic model. This approach enables modelling a large network at the macroscopic level while selected parts can be detailed at the microscopic level. The paper focuses on the compatibility problems induced by the juxtaposition of two different modelling levels (macro-micro interfaces, macroscopic traffic stream models and microscopic car-following models compatibility), which led us to propose a new car following model for SITRA-B+. First results obtained on a simplified network are presented.