基于交通冲突率的常规交叉口交通安全评价与优化

Traffic Safety Evaluation and Optimization of Conventional Intersections Based on Traffic Conflict Rate

为合理分析城市道路交叉口交通安全事故的起因,降低交通事故率,以建设路与仙衣路交叉口为研究对象,采用交通冲突率作为评价指标对现状交叉口及优化后交叉口的交通安全性进行评价,并将评价结果进行对比分析。结果表明,合理分析现状交叉口的实际使用情况,就相关缺陷做针对性补充与完善,如增设右转渠化岛、增设交叉口信号配时、完善相关交通设施的布设等,可充分发挥道路及附属设施的实际功能,有效提高道路交叉口的交通安全性。

In order to reasonably analyze the causes of traffic safety accidents at urban road intersections and reduce traffic accident rates,taking the intersection of Jianshe Road and Xianyi Road as the research object,the traffic conflict rate is used as the evaluation index to evaluate the traffic safety of the current intersection and the optimized intersection,and the evaluation results are compared and analyzed.The results show that reasonable analysis of the actual use situation of the current intersection,and targeted supplementation and improvement of relevant defects,such as adding right turn channelization islands,adding intersection signal timing,and improving the layout of relevant traffic facilities,can give full play to the actual function of the road and ancillary facilities,and effectively improve the traffic safety of the road intersection.