基于交通场的无信号交叉口交通冲突严重性分析

摘要

我国以往的基于交通冲突技术的安全评价方法，对冲突严重性判定等相关内容缺少系统性研究，使得安全评价结果缺乏足够可信度。提出了交通场的概念，通过对交通场冲突严重性模型的建立，得到了基于场势能的交通冲突严重性的计算公式。在此基础上，得出交通冲突标准值的确定方法，并对无信号交叉口进行安全危险性等级评价。通过实例分析，证明该评价方法合理可靠。%The safety evaluation method based on traffic conflict technique is lack of conflict sever-ity determination of the content related to system research,resulting in the lack of enough credibility of the safety evaluation.This paper puts forward the concept of traffic field,and builds a model about the traffic conflict severity,getting a formula about the severity of traffic conflict based on the field potential energy.On this basis,concludes the methods to traffic conflict standard values,and security risk level of no signal intersection is evaluated.This evaluation method is reasonable and reliable by practical analy-sis.