交通运输系统工程与信息

交通运输系统工程与信息 ›› 2011, Vol. 11 ›› Issue (增1): 22-28.

• 城市交通理论与方法 • 上一篇    下一篇

基于头车疏解车距的混合交通信号交叉口通行能力研究

钱堃*1，田照丰2，孙壮志3   

  1. 1. 北京交通大学 城市复杂系统理论与技术教育部重点实验室，北京 100044；2. 北京交通大学 交通运输学院，北京 100044； 3. 北京交通发展研究中心，北京 100055
  • 收稿日期:2010-05-23 修回日期:2010-07-21 出版日期:2011-12-28 发布日期:2011-07-18
  • 作者简介:钱堃 (1986-)，女，山东济宁人, 博士生.
  • 基金资助:

    国家重点基础研究发展计划(2006CB705500); 国家自然科学基金重点项目（70631001）

Capacity Analysis of Signalized Intersections under Mixed Traffic Conditions Based on the First Discharge Headway

QIAN Kun1, TIAN Zhao-feng2, SUN Zhuang-zhi3   

  1. 1. MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology，Beijing Jiaotong University，Beijing 100044, China；2. School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China；3. Beijing Transportation Research Center, Beijing 100055, China
  • Received:2010-05-23 Revised:2010-07-21 Online:2011-12-28 Published:2011-07-18

被引次数

1

摘要： 头车疏解车距(The First Discharge Headway)是绿灯开始后到第一辆机动车启动并通过停车线的时间. 本文分析了混合交通信号交叉口不同车道交通流的车型比例和干扰比例，结果表明, 左转车道的小型车比例和受到的干扰次数高于直行车道. 随后利用Logistic模型、Compertz模型、Logsitic模型分别对左转车道、内侧直行车道、外侧直行车道的头车疏解车距进行拟合，用Matlab软件对头车疏解车距累计频率15%至85%之间的数据进行定积分运算，得到各车道的修正头车疏解车距分别为3.98 s，4.60 s，4.85 s. 最后通过实例验证，发现对于不同车道，模型修正后的误差比模型修正前都有明显的下降.

关键词: 城市交通, 头车疏解车距, 混合交通, Matlab拟合, Logistic模型, Gompertz模型

Abstract: The First Discharge Headway is the time consumed by the first car in the queue from its startup when the green light turns on to the second while it is completely across the stop line. This study analyzes the traffic composition and interference ratio of different lanes at the signalized intersection with mixed types of traffic flows. It is presented that left-turning lanes holds more small-sized vehicles and have much more interference. The functions of the first discharge headway of the left-turning lanes, inside through lanes, and outside through lanes are respectively studied by the Logistic model, the Compertz model and the Logsitic model. By further calculation, the first discharge headways of the left-turning lanes, inside through lanes, and outside through lanes are 3.98s, 4.60s and 4.85s respectively. The errors of modified model and the traditional one are computed by using the actual data. It turns out that the error of the modified model decreases sharply in comparison to the error of the traditional model.

Key words: urban traffic, first discharge headway, mixed traffic, Matlab fitting, Logistic model, Gompertz mode

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