Noise-induced Stop-and-Go Dynamics

2018/01/29 by Tordeux, Antoine, Schadschneider, Andreas, Lassarre, Sylvain
#FOS: Physical sciences #Physics and Society (physics.soc-ph)

paper · doi:10.48550/arxiv.1801.09791

Abstract

Stop-and-go waves are commonly observed in traffic and pedestrian flows. In traffic theory they are described by phase transitions of metastable models. The self-organization phenomenon occurs due to inertia mechanisms but requires fine tuning of the parameters. Here, a novel explanation for stop-and-go waves based on stochastic effects is presented for pedestrian dynamics. We show that the introduction of specific coloured noises in a stable microscopic model allows to describe realistic pedestrian stop-and-go behaviour without requirement of metastability and phase transition. We compare simulation results of the stochastic model to real pedestrian trajectories and discuss plausible values for the model's parameters.

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