公路平面交叉路口安全性评价及对策研究

Research on Safety Evaluation and Countermeasures of Highway Intersections

公路交叉口形成公路网方便交通出行的同时,由于平面交叉口设置不合理、设施不齐全、管理不完善等方面的原因,导致平面交叉口事故多发,严重影响交通安全。通过对内蒙古典型公路调查分析,内蒙古公路平面交叉口一般存在平面交叉口设置过多过密,速度差梯度较大,交通管理控制薄弱,安全设施不完善及设计不合理等问题,导致公路平面交叉口交通安全事故频发。平面交叉口设计后,要对其安全性进行专项评估,文章以内蒙古某一级公路为例,通过对渠化平面交叉变速车道和转弯附加车道进行安全性评价,分析其平面交叉口设置的合理性和安全性。针对内蒙古公路平面交叉口存在的安全问题,从完善平面交叉口规划、优化平面交叉口设计、开展平面交叉口安全性评价及加强平面交叉口管理四个方面提出安全对策,以期为提升公路平面交叉口安全性提供参考。

Road intersections make travel easier in the road network. However, there are problems such as unreasonable setting, incomplete facilities, and imperfect management at grade intersections, which lead to frequent accidents at grade intersections,and the traffic safety is seriously affected.Through the investigation and analysis of typical highways in Inner Mongolia, there are problems such as too many level intersections, too dense gradients, weak traffic management and control, imperfect safety facilities and unreasonable design, which lead to frequent traffic safety accidents at highway grade intersections.After the design of plane intersection,the special evaluation should be carried out on its safety. Taking a highway in Inner Mongolia as a case,the rationality and safety of the setting of plane intersection are analyzed through the safety evaluation of the channelized plane crossing variable speed lane and turning additional lane. In view of the safety problems existing in Inner Mongolia highway intersection,the safety countermeasures are put forward from four aspects of improving the planning of the intersection,optimizing the design of the intersection,carrying out the safety evaluation of the intersection and strengthening the management of the intersection to improve the safety of the highway intersection.