桥头跳车对行车安全性影响的模糊评价

Fuzzy Evaluation of the Impact of Vehicle Bumping at Bridge-Head on Driving Safety

桥头跳车现象严重影响了高等级公路行车的舒适性与安全性,目前尚无可行的指标或方法来评价桥头跳车对于行车安全性的影响。从道路和环境这些影响行车安全的基本因素出发,提出了桥头跳车对行车安全性影响的评价指标,并且基于层次分析法和模糊综合评价法建立了桥头跳车对行车安全性影响的评估模型。采用Matlab软件结合其GUI功能,开发了人性化的行车安全评估系统,并对实际的桥头环境进行了评估,它为桥头跳车对行车安全的影响评估提供了一种新方法,具有较好的应用价值与使用效果。

Vehicle bumping at bridge-head seriously affects traveling comfort and safety on the high-grade highway. It greatly reduces the operational efficiency of high-grade highways and the overall level of service. At present, there is no feasible index or way to evaluate the impact of vehicle bumping at bridge-head on driving safety. In order to solve this problem, the paper presents evaluation indexes of the impact of vehicle bumping at bridge-head on driving safety from the point of view of basic element of road and environment which impacts driving safety, and the evaluation model is established based on analytical hierarchy process and fuzzy comprehensive evaluation method. The paper also presents the evaluation indexes and fuzzy comprehensive evaluation model of the impact of vehicle bumping at bridge-head on driving safety. By the analytic hierarchical process method, the weights of the evaluation indexes were then determined, with the three rating evaluation aggregate parameters well founded. Finally, evaluation system of vehicle bumping at bridge-head on driving safety is developed based on MATLAB software. And for the sake of the convenience of users, we use the function of GUI of MATLAB and the evaluation system is used in typical practical engineering for assessment. The result is in line with the actual situation, and it has very good referential value to sovle the problem of driving safety at bridge-head. It provides an evaluation method of vehicle bumping at bridge-head on driving safety and has a good effect on application.