基于车辆运行特性的高速公路养护施工区行车风险分析

Analysis of freeway work zone driving risk based on vehicle operating characteristics

施工区造成高速公路行车环境突变,严重影响行车安全。考虑行车环境的复杂性和车辆运行的特殊性,分析高速公路养护施工区车辆合流、跟驰及分流行驶状态;根据车辆运动规律,分析这些过程中的强制变换车道风险和跟驰风险;确定高速公路养护施工区避免冲突风险的约束条件,为降低养护施工区行车风险提供依据。

The road traffic environment mutation caused by work zone affects seriously the traffic efficiency and driving safety. Taking into the consideration of traffic environment complexity and vehicle driving characteristics, the vehicle travel behaviors including merging operation, car-following operation and diverging operation are analyzed at freeway work zone. According to the theory of vehicle dynamics, the risk of mandatory lane-changing and car-following are analyzed, and the restrictions by which vehicle could run safely are put forward during the course of merging, car-following and diverging at freeway work zone. A theoretic base is provided for the improvement of traffic safety of freeway work zone.