山地城市道路立交出口匝道安全性分析

Analysis on the safety of exit ramp of road overpass in mountainous city

受地形限制山地城市道路路网一般采用自由式布置,多设互通式立交,缓解交通压力,而在互通式立交交通运营过程中,出口位置以其交通流交织引发的交通冲突及交通事故时有发生,影响互通式立交安全性及畅通性。本次研究通过对部分山地城市立交进行调研,分析了影响山区城市道路立交出口匝道安全影响因素,并确定了立交出口匝道事故成因。

Because of the limitation of terrain,the free style layout of road network is generally adopted by mountain city,and many interchanges are built to ease the traffic pressure. However in the process of interchange operation,traffic conflicts and traffic accidents caused by the interchange of traffic flow occur at the exit,which affects the safety and smoothness of interchange. In this study,based on investigation and research,the factors influencing the safety of the exit ramp of the urban road interchange in mountainous areas are analyzed and the causes of the accident on the exit ramp are determined.