信号灯作用下的城市隧道路段交通流模型研究

doi:10.3976/j.issn.1002-4026.2019.03.009

Abstract

Abstract: In this paper, the characteristics of traffic flow in the urban tunnel section were analyzed, and the cellular automata model of the section was established. At the same time, the numerical simulation was carried out on the condition that the tunnel and the upstream and downstream intersections were in different relative positions and different phase differences. The result shows that the capacity of the urban tunnel section can be influenced by the relative position of the tunnel and signal lights as well as the phase difference between the upstream and downstream traffic lights. Reasonable signal timing control can enhance the capacity of the road section and intersections, and relieve the congestion. However, when the tunnel is close to the downstream intersection, the capacity of road section is obviously reduced, the congestion in the tunnel is serious, and signal control doesn′t work on the traffic congestion.

Key words: transportation engineering, traffic flow, cellular automata, urban tunnel section, signal control, capacity

CLC Number:

U491.1

WANG Wei, WU Zhong. Study on the traffic flow model of urban tunnel section under signal control[J].Shandong Science, 2019, 32(3): 57-64.

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Study on the traffic flow model of urban tunnel section under signal control

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