交通运输系统工程与信息 ›› 2017, Vol. 17 ›› Issue (3): 213-221.

• 系统工程理论与方法 • 上一篇    下一篇

基于时空相关性的城市交通路网关键路段识别

苏飞a, b, c,董宏辉a, b, c,贾利民*a, b, c,孙璇a, b, c   

  1. 北京交通大学a. 轨道交通控制与安全国家重点实验室;b. 交通运输学院 c. 北京市城市交通信息智能感知与服务工程技术研究中心, 北京100044
  • 收稿日期:2016-10-24 修回日期:2016-12-20 出版日期:2017-06-25 发布日期:2017-06-26
  • 作者简介:苏飞(1986-),男,山西阳泉人,博士生.
  • 基金资助:

    国家科技支撑计划项目/ National Science and Technology Support Plan Project (2014BAG01B04).

Identification of Critical Section in Urban Traffic Road Network Based on Space-time Correlation

SU Fei a, b, c, DONG Hong-hui a, b, c, JIA Li-min a, b, c, SUN Xuan a, b, c   

  1. a. State Key Laboratory of Rail Traffic Control and Safety; b. School of Traffic and Transportation; c. Beijing Engineering Research Center of Urban Traffic Information Intelligent Sensing and Service Technologies, Beijing Jiaotong University, Beijing 100044, China
  • Received:2016-10-24 Revised:2016-12-20 Online:2017-06-25 Published:2017-06-26

摘要:

关键路段通行能力的大小是决定城市道路交通是否畅通的重要因素之一.关键路段的识别为交通规划、居民出行等提供了重要的决策支撑,对缓解交通拥堵具有重要的意义.本文对城市路网关键路段的识别进行了研究.首先建立了适用于交通路网的空间邻接矩阵;其次以时空相关函数表达不同时间延迟下路段与周边相邻路段交通状态之间的影响程度,并将其作为路段重要性的衡量指标,构建了逼近于理想点的路段重要性度量模型,通过排序实现了对关键路段的识别;最后将模型应用于北京市区域路网,结果证明,该方法能够有效地识别路网的关键路段,具有实用性和可行性.

关键词: 城市交通, 识别方法, 时空相关性, 关键路段, 路段重要性

Abstract:

The capacity of critical section is one of the important reasons for leading to urban road traffic congestion. The identification of critical section provides important decision supports for traffic planning, travel services and so on. It has great significance to alleviate traffic congestion. This paper investigates the identification method of critical section in urban road network. According to the characteristic of traffic flow, the spatial adjacency matrix is established for road network. Then space- time correlation is proposed to explain the strength of influence between section and its neighbors under different time delays. Taking the strength of influence as a measure of section importance, the importance measurement model is constructed using technique for order preference by similarity to an ideal solution. At last, the proposed model is applied in a subset of Beijing’s road network, and the results show that the model is practical and feasible, and can identify critical section in urban road network effectively.

Key words: urban traffic, identification method, space-time correlation, critical section, section importance

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