Traffic Jam Formation in Traffic Flow on a Harbor Tunnel

Hongdi He (), Weizhen Lu, Liyun Dong and Shiqiang Dai
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Hongdi He: City University of Hong Kong, Department of Building and Construction
Weizhen Lu: City University of Hong Kong, Department of Building and Construction
Liyun Dong: Shanghai University, Shanghai Institute of Applied Mathematics and Mechanics
Shiqiang Dai: Shanghai University, Shanghai Institute of Applied Mathematics and Mechanics

A chapter in Computational Mechanics, 2007, pp 263-263 from Springer

Abstract: Abstract A study on the occurrence and growth of traffic jams on a single-lane in the tunnel by using the optimal-velocity traffic model [1–3] is reported in this paper. At the low vehicle density, the current increases linearly with density and saturates at certain values of density range. As the vehicle density increases, the traffic jam appears firstly before the uphill section and extends to the downhill section with the increasing density. The relationships of velocity against position in different vehicle density are obtained from simulations, which clarifies clearly where and when the traffic jam occurs. We also derived the critical densities before and after the discontinuous fronts from the theoretical current curves. These values also comply with the results of simulation [4]. The study will be useful to provide suggestions for engineer to control the range of vehicle density in tunnel to avoid the traffic jam.

Date: 2007
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DOI: 10.1007/978-3-540-75999-7_63

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