基于模糊逻辑理论的道路交通安全评价方法

Road Safety Evaluation Based on Fuzzy Logic

摘要:

根据国内外道路交通安全相关研究,选用运行车速与设计车速差和相邻路段运行车速差作为评价指标.以模糊逻辑理论为基础,通过对调研数据的测试,建立了合理的隶属函数,从而构建了道路交通安全模糊评价模型,并基于评价结果对道路交通安全等级进行了划分.最后给出了该评价方法的应用实例.理论分析和实例表明,该评价方法不仅合理,而且具有广泛的适用性.

Abstract:

Based on numerous research works on road traffic safety, the difference between the designed speed and the operating speed and the operating speed difference between successive road segments were chosen as the evaluation indexes. Some tests were carried out to obtain the best adaptation of the fuzzy judgment to the expected accident late to define the shape of the membership functions. Consequently, a fuzzy model for road traffic safety evaluation is established. Moreover, a more careful evaluation is obtained on the basis of fuzzy model classification. Finally, the evaluation process is illustrated by a case study.