低等级公路交叉口与城市道路非信号灯交叉口车辆运行速度特征比较分析

摘要

Intersections are critical junctures for low-grade highway and urban road network and at the same time they are black spots. It is of great significance to obtain the knowledge about vehicle speed characteristics in different positions so as to take traffic management measures and improve transportation facilities. This study used vehicle test to collect vehicle speeds in three kinds of distances respectively———far from, less far from and near——— the centers of urban unsignalized intersections and low-grade highway intersections. After comparison and analysis about their characteristics, distribution functions of vehicle speed in different distances to intersec-tion centers were established. It then obtained the pattern of vehicle speed variation at low-grade highway inter-sections or urban unsignalized intersections, which provides some reference for traffic management and design of transportation facilities.%平面交叉口是低等级公路和城市道路路网中的重要节点，同时也是事故多发位置，了解并掌握距离交叉口不同位置车辆运行速度特征，对于交通管理措施的制定和道路交通设施的设计改进都具有重要意义。采用实车实验技术分别采集低等级公路和城市道路非信号灯交叉口进口道距交叉口中心远，中，近3种不同距离的车辆运行速度，对比分析两者的特征差别，建立了距离交叉口不同距离的车辆运行车速特征分布函数，从而获得低等级公路交叉口与城市道路非信号灯交叉口车辆运行速度特征变化规律，为交通管理和设施设计提供参考。