Journal of Computer Applications ›› 2021, Vol. 41 ›› Issue (7): 2108-2112.DOI: 10.11772/j.issn.1001-9081.2020081332

Special Issue: 前沿与综合应用

• Frontier and comprehensive applications • Previous Articles     Next Articles

Signal timing optimization model of dual-ring phase under condition of setting waiting area

YANG Zhen1, MA Jianxiao1, WANG Baojie2   

  1. 1. College of Automobile and Traffic Engineering, Nanjing Forestry University, Nanjing Jiangsu 210037, China;
    2. College of Transportation Engineering, Chang'an University, Xi'an Shaanxi 710064, China
  • Received:2020-09-02 Revised:2020-09-29 Online:2021-07-10 Published:2020-12-09
  • Supported by:
    This work is partially supported by the Natural Science Foundation of Jiangsu Province (BK20170932), the Youth Science and Technology Innovation Funds of Nanjing Forestry University (CX2017011), the Youth Program of the National Natural Science Foundation of China (51908060), the Reform and Construction Project of Graduate Education and the Teaching "Exploration on Engineering Education Certification of Master Degree in Transportation Engineering" of Chang'an University (300103190133).


杨震1, 马健霄1, 王宝杰2   

  1. 1. 南京林业大学 汽车与交通工程学院, 南京 210037;
    2. 长安大学 运输工程学院, 西安 710064
  • 通讯作者: 杨震
  • 作者简介:杨震(1987-),男,浙江嵊州人,讲师,博士,主要研究方向:交通控制、交通管理、交通仿真与建模;马健霄(1966-),男,内蒙古赤峰人,教授,博士,主要研究方向:交通运输规划与管理;王宝杰(1987-),男,河南平顶山人,副教授,博士,主要研究方向:交通流理论、交通安全。
  • 基金资助:

Abstract: In order to improve the driving efficiency of intersections with waiting areas, the effect of setting waiting area was firstly equal to the increase of lane green ratio. Then a signal timing optimization model for intersection was developed based on National Electronic Manufacturers Association (NEMA) standard dual-ring phase with the objective of minimizing the average vehicular delay. Next, a genetic algorithm for solving the model was designed by considering the ring-barrier constraint in phase structure. Finally, the model and algorithm were applied to the example intersection. The results show that compared to the signal timing scheme obtained by Synchro software, the model can obtain the scheme with shorter cycle and lower average vehicular delay. The delay reduction of the proposed model ranges from 12.9% to 17.4% when only left-turn waiting areas are provided at the intersections, and from 17.5% to 25.5% when both left-turn and through-movement waiting areas are provided. Besides, the model is not sensitive to the value of queue clearance rate, and can obtain almost the same signal timing scheme at the minimum and maximum vehicular speeds.

Key words: intersection, signal timing optimization, genetic algorithm, waiting area, dual-ring phase

摘要: 为提高设有待行区交叉口的行车效率,首先将设置待行区的效果等价于车道绿信比的增加;接着基于美国国家电气制造商协会(NEMA)标准双环相位,以车辆平均延误最小为目标,建立了交叉口信号配时优化模型;然后考虑相位结构中环-屏障约束条件,设计了用于求解模型的遗传算法;最后将模型和算法应用于实例交叉口。研究结果表明:该模型能够得到比Synchro软件周期更短、车辆平均延误更低的信号配时方案。在交叉口仅设置左转待行区的条件下,模型的延误降低幅度为12.9%~17.4%;在交叉口同时设置左转、直行待行区的条件下,模型的延误降低幅度为17.5%~25.5%。此外,该模型对排队消散速度的取值并不敏感,在最小及最大车速的条件下能够得到几乎相同的配时方案。

关键词: 交叉口, 信号配时优化, 遗传算法, 待行区, 双环相位

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