【摘要】 信号交叉口进口道延误、排队长度和信号周期、配时、车流到达率及交通量的关系研究 ,是城市道路交通微观运行分析和评价的核心。经典的Webster信号交叉口进口车道延误计算公式 ,在我国城市无法直接采用。本文通过实证研究 ,设计有效的调查方法 ,通过大量信号交叉口进口道调查数据拟合出相关性很高的城市或城市特定地区的定量关系式 ,可用来预测和评价交通供给或交通流量变化后的交通运行状况。最后以实际项目为例 ,进行交通影响评估研究更多还原

【Abstract】 The relationship of delay, queue length, signal cycle, vehicle arriving rate and traffic volume in signal intersection entrance lanes is key to urban road traffic micro?operational analysis and evaluation Traditional Webster signal intersection delay formula isn′t directly used in China cities According to actual situation, this paper adopts positive research method to design effective traffic survey and investigates a great amount of data in entrance lanes of signal intersections A relationship model for a city or urban special region is created It can predicate and evaluate traffic operational situation and traffic flow change The paper takes the case study for the traffic impact evaluation更多还原