城市快速路出口匝道与衔接交叉口协调控制研究

doi:10.3976/j.issn.1002-4026.2022.02.013

摘要/Abstract

摘要：

城市交通出行需求具有动态性,快速路出口匝道与下游衔接交叉口具有较强的关联性,当交叉口交通疏解能力有限,出口匝道与衔接交叉口距离未合理设置时,交叉口排队易延伸至出口匝道,影响快速路车流正常运行。利用并行微观交通仿真软件Paramics对不同交通需求、出口匝道与下游衔接交叉口间距情况下的城市快速路出口匝道与衔接交叉口的信号协调控制进行研究,分析出口匝道的信号控制和相位差对路网交通流量和行程时间的影响。仿真结果表明出口匝道与衔接交叉口的信号协调控制能明显提高交通流量,降低行程时间。

关键词: 城市交通, 协调控制, 相位差, 出口匝道, 交叉口

Abstract:

Urban traffic travel demand is dynamic, and there is a strong correlation between the off-ramp of an urban expressway and its downstream adjacent intersection. When the capacity of the intersection is low and the distance between the off-ramp and adjacent intersection is not set reasonably, queues at the intersection can easily propagate to the upstream off-ramp and affect expressway traffic flow.In this paper, the coordinated signal control of the off-ramp and adjacent intersection of urban expressway is studied under different traffic demand, distances between off-ramp and adjacent intersection using parallel microscopic traffic simulation software Paramics. And the effects of both signal control and phase offsets of the off-ramp on traffic volumes and travel time are analyzed.Simulation results show that the coordinated signal control of the off-ramp and adjacent intersection can improve traffic volumes and reduce travel time.

Key words: urban traffic, coordinated control, phase offset, off-ramp, intersection

中图分类号:

U491.2

刘正,刘素芳,李新刚. 城市快速路出口匝道与衔接交叉口协调控制研究[J]. 山东科学, 2022, 35(2): 106-114.

LIU Zheng,LIU Su-fang,LI Xin-gang. Coordinated control of urban expressway off-ramp and adjacent intersection[J]. Shandong Science, 2022, 35(2): 106-114.

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位置	交通需求量/(veh·h^-1)
位置	低交通需求	高交通需求
D_m	5 000	9 000
D_s	1 975	2 500
D_on	400	400
D_off	500	1 000