Lane Signal Control Strategy Based on Maximum Capacity of Urban Arterial Weaving Section

Journal of Transportation Systems Engineering and Information Technology ›› 2019, Vol. 19 ›› Issue (1): 55-61.

• Intelligent Transportation System and Information Technology • Previous Articles Next Articles

Lane Signal Control Strategy Based on Maximum Capacity of Urban Arterial Weaving Section

LIU Wei¹, CHEN Ke-quan¹, TIAN Zong-zhong ², YANG Guang-chuan³

1. School of Transport, Chongqing Jiaotong University, Chongqing 400000, China; 2. University of Nevada, Reno, NV 89557, USA; 3. Department of Civil and Architectural Engineering, University of Wyoming, Laramie, WY 82071, USA

Received:2018-09-19 Revised:2018-11-09 Online:2019-02-25 Published:2019-02-25

干道交织区通行能力最大化的合流车道控制

刘伟¹，陈科全^*1，田宗忠 ²，杨广川³

1. 重庆交通大学交通运输学院，重庆 400000；2. 内华达大学里诺分校，里诺 89557，内华达州，美国； 3. 美国怀俄明大学土木建筑工程学院，拉勒米 82071，怀俄明州，美国

作者简介:刘伟(1978-)，男，重庆人，教授.
基金资助:
重庆市社会事业与民生保障科技创新专项项目/ Social Undertake and Livelihood Security Technology Innovation Project of Chongqing(cstc2015shms-ztzx30015)；城市交通管理集成与优化技术公安部重点项目/ Key Laboratory of Urban ITS Technology Optimization and Integration Ministry of Public Security, People's Republic of China(2017KFKT08)；重庆交通大学研究生教育创新基金/Chongqing Jiaotong University Graduate Education Innovation Fund(2017S0118).

Abstract

Abstract:

A lot of weaving traffic at weaving section contributed to“capacity- drop”. In order to improve the maximum traffic capacity of weaving section, this paper proposes a new lane signal control method to regular the traffic volume and interleaving ratio. With consideration of the operation characteristics of weaving section and the traffic imbalance feature at each entrance lane, the reduction coefficient of weaving traffic was adopted. A capacity calculation model for the weaving traffic under the lane signal control is developed. This study focus on the best scheme of lane signal control, accordingly, the optimization model is established. The objective function is to maximize the weaving capacity and the constraints are the safety space headway between two adjacent phases and the scheme of phase. A mean error in the weaving section capacity (about 2.44%) is observed when comparing the capacity model calculation to field data at a representative urban arterial weaving section. The results show that a huge capacity drop of weaving section can be observed, along with the increase of traffic volume. After adopting the lane signal control strategy, the actual capacity of weaving section increased significantly.

Key words: traffic engineering, weaving section, lane signal control, optimization model, capacity, optimal timing

摘要：

城市干道交织区内大量的车辆交织将严重降低道路的通行能力，本文根据车辆交织行为及各汇入车道交通量的不均衡性，提出了交织区合流车道信号控制方式.采用交织折减系数，建立了车道控制下的交织区实际通行能力计算模型；随后，以交织区内实际通行能力最大为目标函数，交织区内交织比例和相位控制方案为约束条件，提出了合流车道最优信号配时模型；最后以实际数据进行验证，汇入控制的实际通行能力与模型计算结果的误差仅为2.44%，验证了通行能力计算模型的有效性.模型计算结果表明：随着高峰期间汇入交通量的增加，交织区内存在大幅度的通行能力骤减，采用分车道信号控制后，交织区的实际通行能力与实际过车数得到明显提升.

关键词: 交通工程, 交织区, 合流控制, 优化模型, 通行能力, 最优配时

CLC Number:

U491.4

LIU Wei, CHEN Ke-quan, TIAN Zong-zhong, YANG Guang-chuan. Lane Signal Control Strategy Based on Maximum Capacity of Urban Arterial Weaving Section[J]. Journal of Transportation Systems Engineering and Information Technology, 2019, 19(1): 55-61.

刘伟，陈科全，田宗忠，杨广川. 干道交织区通行能力最大化的合流车道控制[J]. 交通运输系统工程与信息, 2019, 19(1): 55-61.

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Lane Signal Control Strategy Based on Maximum Capacity of Urban Arterial Weaving Section

干道交织区通行能力最大化的合流车道控制

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