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为了计算U型回转交叉口通行能力,为U型回转交叉口的规划设计提供依据,在分析U型回转交叉口交通流特性的基础上,将U型回转交叉口通行能力划分为主交叉口直行车辆的通行能力、回转路口左转车辆的通行能力以及右转车辆通行能力3部分。利用常规交叉口通行能力停车线计算模型、可接受间隙理论分别建立了U型回转交叉口直行车辆的通行能力与回转路口左转车辆的通行能力的计算模型,最后得到包括右转车在内的整个U型回转交叉口的通行能力模型。
In order to calculate the capacity of the U-turn junction and provide the basis for the planning and design of the U-turn junction, based on the analysis of the traffic flow characteristics at the U-turn junction, the capacity of the U-turn junction is divided into straight line Traffic capacity of vehicles, turn left turn vehicles turnaround capacity and right turn traffic capacity of 3 parts. Based on the calculation model of traffic capacity of normal intersections and the accepted clearance theory, the calculation models of the capacity of straight-ahead vehicles at U-turn intersection and the capacity of left-turn vehicles at turning points are established respectively. Finally, Capacity Model of U - turn Intersection.