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Effects of Bottlenecks on Vehicle Traffic

Syohei Yamamoto, Yasuhiro Hieida, Shin-ichi Tadaki

physics.soc-pharXiv:physics/0604072

Abstract

Traffic congestion is usually observed at the upper streams of bottlenecks such as tunnels. Congestion appears as stop-and-go waves and high density uniform flow. We perform simulations of traffic flow with a bottleneck using the coupled map optimal velocity model. The bottleneck is expressed as a road segment with speed reduction. The speed reduction in the bottleneck controls the emergence of stop-and-go waves. A phenomenological theory of bottleneck effects is constructed.

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