不同支路角度无信号T型交叉口交通流特性研究

Traffic Flow Characteristics of Unsignalized T-intersections of Different Minor Road' s Angle

主路车头时距和速度特性是研究无信号T型交叉口通行能力的重要因素。通过实测重庆市铜梁区三支有代表性的不同支路角度无信号T型交叉口主路车速和车头时距数据,分析了支路角度对主路车速、车速离散性的影响,总结出应尽量避免用支路角度70°和支路角度110°无信号T型交叉口对干路车辆进行分流。为提高卫星城市路网和无信号T型交叉口通行能力提供建议。

The characteristics of time headway and speed of the major road are the important factors of studying unsignalized T- intersections traffic capacity. The paper measured data of vehicle speed and time headway at three unsignalized T- intersections of different minor road ' s angle on major road in Tongliang District,Chongqing. Analyze the effects of minor road' s angle to the vehicle speed and discrete of vehicle speed in the major road. Summed up that try to avoid using minor road' s angle 70° and 110° unsignalized T- intersections to shunt the major road' s traffic flow. Provide advice to improve the capacity of satellite city' s road network and unsignalized T- intersection.