信号交叉口机非冲突临界流量研究

在分析右转机动车冲突类型的基础上,通过仿真方法得出右转机动车平均延误随机非流量的增大跳跃增加以及在跳跃点处机非流量呈线性关系。分别改变交叉口绿信比和非机动车道宽度此线性关系仍然存在。以跳跃发生点处的曲线作为交通控制的临界条件,提出滞后放行时间的计算方法,结合实际交叉口进行仿真验证,得出临界流量条件的正确性。

Critical Flow of Conflict Between Motor Vehicles and Non-motor vehicles at Signalized Intersection

On the base of analyzing the conflict types of right-turn vehicles,this paper studies the conflicts between right-turn vehicles and straight bicycles in the same direction.Delay of right-turn vehicles substantially fluctuates with the flow of both vehicles and non-vehicles increase.There is a linear relationship between the flow of vehicles and non-vehicles at the point where the fluctuation takes place and the linear relationship still holds when the width of bicycle path and the signal timing conditions are changed.With the curve at the point as the critical flow condition of traffic control,the methods of calculating the lag time of right-turn vehicles are put forward.The critical flow conditions are verified by simulating the real intersection.