Microscopic features of moving traffic jams

Details Microscopic features of moving traffic jams Microscopic features of moving traffic jams

2005-10-18

arxiv.org/abs/physics/0510167v1

Physics

Physics and Society

19 pages, 12 figures

Scientific paper

10.1103/PhysRevE.73.046107

Empirical and numerical microscopic features of moving traffic jams are presented. Based on a single vehicle data analysis, it is found that within wide moving jams, i.e., between the upstream and downstream jam fronts there is a complex microscopic spatiotemporal structure. This jam structure consists of alternations of regions in which traffic flow is interrupted and flow states of low speeds associated with "moving blanks" within the jam. Empirical features of the moving blanks are found. Based on microscopic models in the context of three-phase traffic theory, physical reasons for moving blanks emergence within wide moving jams are disclosed. Structure of moving jam fronts is studied based in microscopic traffic simulations. Non-linear effects associated with moving jam propagation are numerically investigated and compared with empirical results.

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