中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2021, Vol. 40 ›› Issue (01): 12-16.DOI: 10.3969/j.issn.1674-0696.2021.01.03

• 交通+大数据人工智能 • 上一篇    下一篇

基于Ring-Barrie相位的交叉口信号配时优化模型

林丽,蒋帅捷   

  1. (南京林业大学 汽车与交通工程学院,江苏 南京 210037)
  • 收稿日期:2019-02-25 修回日期:2019-10-08 出版日期:2021-01-11 发布日期:2021-01-11
  • 作者简介:林丽(1974—),女,福建涂州人,副教授,硕士,主要从事城市与区域交通规划方面的研究。E-mail:linli401@nifu.com.cn
  • 基金资助:
     

Optimization Model of Intersection Signal Timing Based on Ring-Barrier Phase

LIN Li, JIANG Shuaijie   

  1. (School of Automobile and Traffic Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China)
  • Received:2019-02-25 Revised:2019-10-08 Online:2021-01-11 Published:2021-01-11
  • Supported by:
     

摘要: 为了将交叉口时空资源最大化利用,以Ring-Barrier相位运行规则为基础,建立了一种城市交叉口信号配时优化模型,该模型将求解交叉口整体延误最小值转化为非线性规划问题。通过选取交叉口平均延误作为优化目标,选取交叉口信号控制的周期时长和各相位绿灯时间作为变量,选用分支定界算法作为此非线性规划问题的求解算法。为验证信号配时优化效果,选取南京市一交叉口作为实例,运用相关工具软件对模型进行了求解。结果表明:实施优化模型后,交叉口整体延误随着迭代次数不断降低并逐渐收敛,第39次迭代优化结果与Webster配时模型相比,交叉口平均延误减少了29.1%,有效的提升了交叉口整体运行效率。

 

关键词: 交通工程, 配时优化, 非线性规划, Ring-Barrier相位, 分支定界法

Abstract: In order to maximize the use of spatial and temporal resources of intersections, a signal timing optimization model of urban intersections based on Ring-Barrier phase operation rules was established. In the proposed model, the minimum delay of intersection was transformed into a nonlinear programming problem. By selecting the average delay of intersection as the optimization objective, the cycle time length of intersection signal control and the green light time of each phase as variables, the branch-and-bound algorithm was selected as the solution algorithm of this nonlinear programming problem. Taking one intersection in Nanjing as an example, the relevant software tools were used to solve the proposed model and verify the effect of signal timing optimization. The results show that: after the implementation of the optimization model, the overall delay of the intersection decreases with the number of iterations and gradually converges. Compared with Webster timing model, the 39th iteration optimization result makes the average delay of the intersection reduced by 29.1%, which effectively improves the overall operation efficiency of the intersection.

Key words: traffic engineering, signal timing optimization, nonlinear programming, Ring-Barrier phase, branch-and-bound algorithms

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