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在环形交叉口左转二次信号控制理论的基础上,针对环形交叉口在非对称流量下的环道利用不均衡问题,提出了一种在流量差异的情况下,利用环道空间提前放行车流的方法,以达到减小信号周期、降低车辆延误、提高环形交叉口通行效率的目的,并对该方法进行了效果评价。最后以昆明市环形交叉口实际非对称流量为基础,利用VISSIM仿真技术进行了对比分析,验证了其有效性和实用性。
Based on the left-turn secondary signal control theory at the roundabout, aiming at the unbalanced utilization of the roundabout at the roundabout under asymmetric flow, a new method is proposed to release the traffic flow ahead of the roundabout with the difference of traffic flow In order to reduce the signal period, reduce the vehicle delay and improve the efficiency of traffic roundabout at the roundabout, and evaluate the effectiveness of this method. Finally, based on the actual asymmetric traffic at the roundabout of Kunming City, the VISSIM simulation technology is used to conduct a comparative analysis, which verifies its effectiveness and practicability.