基于事件链的平面交叉口右转评估技术

为了实现对交叉口综合性的评估,安全性和效率被同时纳入评估指标中.研究典型四相位交叉口右转冲突过程,提出右转事件链模型.详细分析机动车右转过程中与机动车、非机动车、行人产生的冲突行为,以及导致的交通延误.引入可靠度,从概率的角度计算事件链的安全性.引入延误,利用排队理论计算交通运行效率.采用蒙特卡洛法模拟交叉口的运行情况,计算交叉口右转机动车的可靠度和延误.考虑公众心理承受度与交叉口服务水平,评估城市道路平面交叉口,为交叉口优化改善提供科学的依据.

Right Turn Assessment Technique of Intersection Based on Event Chain

This paper aimed to help to provide a more comprehensive evaluation of the intersection taking into account both safety and efficiency. The conflicts during turning right processes in the typical four phase intersections were studied. The right turn event chain model was built. And traffic conflicts and delay between right turn motor vehicles and other motor vehicles, non motor vehicles, and pedestrians were analyzed in detail. The reliability method was introduced to quantify the safety from the perspective of probability while traffic delay was used to measure the efficiency. Besides, the Monte Carlo method was used to simulate the intersections to effectively calculate the reliability and delay of event chains. When assessing the intersections, the public psychological tolerance and intersection service level were referred to. This study can provide scientific basis for intersection optimization.