城市道路车道宽度对通行能力的影响分析

Analysis on Influences of Urban Road Lane Width on Traffic Capacity

首先介绍了饱和流量的计算方法,通过对交通调查数据进行回归分析,得出车流量与车头时距的函数关系,计算出不同车道宽度对应的饱和车头时距。在饱和车头时距与车道宽度的对应关系的基础上,分析了车道宽度对饱和流量的影响,给出了不同车道宽度的折减系数,为城市道路设计车道宽度的选择提供了理论基础。

This paper introduces the calculation method of saturation flow,gets the function relation of vehicle volume with headway based on the regression analysis of traffic investigation data,and calculates the different lane widths corresponding to the saturated headway.On the basis of the corresponding relationship of the saturation headway with the lane width,the article analyzes the influence of lane width on the saturated volume,and gives the reduction coefficients of the different lane widths,which provides the theoretical basis for the selection of the design lane width of the urban roads.