关键词: 交通工程, 城市无信号控制T型交叉口, 通行能力, 间隙接受理论, 概率论, 当量人群, 优先等级

Abstract:

Taking the joint influence of non- motorized vehicles and pedestrians on motor vehicles into account, the priority of traffic flows is divided into 5 ranks. Let major- road through traffic flows and equivalent people groups crossing the minor road be independent priority streams, this paper studies the potential capacity of each minor stream by gap acceptance theory. Considering the effects of higher- rank minor- stream vehicles and equivalent people groups crossing the major road on lower- rank minor- stream vehicles, the paper studies the potential- capacity adjustment factors of each minor stream applying probability theory, and the movement capacity of each minor stream is obtained. So the capacity calculation method of urban road unsignalized T- intersections is acquired. The results indicate that analyzing the joint influence of non- motorized vehicles and pedestrians on motor vehicles by equivalent people groups can simplify the capacity calculation process, and the capacity calculation results is also accord with the running conditions of T-intersections with more non-motorized vehicles and pedestrians.

Key words: traffic engineering, urban road unsignalized T- intersection, capacity, gap acceptance theory, probability theory, equivalent people group, priority ranks