拉萨市信号交叉口通行能力分析——以夺底中路与藏热北路信号交叉口为例

城市道路信号交叉口把城市道路紧密连接起来,是城市道路的重要节点。交叉口的通行能力水平,直接影响整个城市道路运行状况,所以如何提高交叉口通行能力、减少交叉口停车延误是城市交通管理者需要解决的新问题。文章以信号交叉口为研究对象,通过拉萨市夺底中路与藏热北路信号交叉口交通调查,计算此交叉口的通行能力,分析交叉口的运行状况,发现其存在的问题,在此基础上提出提高了信号交叉口通行能力的改善方案。

The signalized intersection of urban road,which connects the urban road closely,is an important node of the urban road.The capacity level of intersections has a direct impact on the operation of the whole city,so how to improve the capacity of intersections and reduce the stop delay at intersections is a new problem that needs to be solved by urban traffic managers.This paper takes the signalized intersection as the research subject,through the traffic investigation of the signalized intersection of Middle Duodi Road and North Zangre Road in Lhasa City,calculates the traffic capacity of this intersection,analyzes the operation condition of the intersection,and discovers the existing problems.On this basis,the improvement scheme of improving the traffic capacity of signalized intersection is put forward.