有倒计时的信号控制交叉口的绿灯间隔时间  

Inter-green Interval of Signalized Intersection with Countdown Indication

作　　者：高云峰[1] 胡华[2] 

机构地区：[1]上海海事大学交通运输学院,上海201306 [2]上海工程技术大学城市轨道交通学院,上海201620

出　　处：《公路交通科技》2013年第2期99-103,共5页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(51008231);中国博士后科学基金特别资助项目(201104287);上海市重点学科建设项目(S30601)

摘　　要：车辆在有倒计时的信号控制交叉口上"抢绿灯"的安全隐患其实在于未正确设置交叉口绿灯间隔时间,并不在于倒计时本身。通过理论推导与分析,建立了有倒计时条件下信号控制交叉口绿灯间隔时间的计算模型。研究认为,驾驶员在有倒计时的信号控制交叉口上的驾驶行为发生变化,有倒计时的信号控制交叉口上不存在"两难区",原来根据"两难区"确定绿灯间隔时间的方法并不适用于有信号倒计时的情形,有倒计时的信号控制交叉口的绿灯间隔时间应该全部作为全红时间。算例分析表明,有倒计时的信号控制交叉口的全红时间随着计算车速增加而减少,但不少于3 s。The safety risk of drivers＇ ＂ rushing green light＂ behaviors at a signalized intersection with countdown indication comes not from the indication itself, but from wrong configuration of the inter-green interval. Configuration of the inter-green interval at a signalized intersection with countdown indication is studied, and a model is derived to calculate it through the theoretical derivation and analysis method. The study reveals that driving behaviors at a signalized intersection with countdown indication are totally different from those at a signalized intersection without countdown indication, and that the dilemma zone does not exist at a signalized intersection with countdown indication. Hence configuration of the inter-green interval according to ＂dilemma zone＂ is not suitable for a signalized intersection with countdown indication, the entire inter-green interval should be indicated as an all-red period, and the calculation example shows that the duration of the all-red period decreases as the calculated speed increases, but it is always more than 3 s.

关 键 词：交通工程 绿灯间隔时间 理论模型 倒计时 交叉口 

分 类 号：U491.51[交通运输工程—交通运输规划与管理]