基于改进事故频数法的山区高速公路交通事故多发点鉴别

Identification of Traffic Accident-prone Points on Mountainous Highways Based on Improved Accident Frequency Method

为提升山区高速公路交通事故多发点鉴别水平,本文以滇东北某典型山区高速公路为研究对象,采集道路条件数据和2020-2021年的交通事故数据,分析交通事故分布情况及成因,针对性提出了基于改进事故频数法的山区高速公路交通事故多发点鉴别方法,并将其与交通事故实际分布情况对比以验证模型准确性。研究结果表明:①山区高速公路的交通事故多发路段主要分布在一般弯陡坡、急弯陡坡组合等先行不良路段;②以500m作为基于改进事故频数法的路段划分依据,交通事故多发点的鉴别结果的空间粒度更为精细;③后续研究将加强针对驾驶人的交通安全教育与宣传,提升交通执法力度,进一步提升山区高速公路的交通安全水平。

In order to improve the identification level of traffic accident-prone points of expressways in mountainous areas,this paper takes a typical mountain highway in northeast Yunnan as the research object,collects road condition data and traffic accident data from 2020 to 2021,and analyzes the distribution and causes of traffic accidents.in this paper,an identification method of traffic accident frequent points of mountain expressway based on improved accident frequency method is put forward.And compare it with the actual distribution of traffic accidents to verify the accuracy of the model.The results show that:①the traffic accident-prone sections of expressways in mountainous areas are mainly distributed in the first bad sections such as general curved steep slopes and sharp curved steep slopes,and②500m is used as the basis of road division based on the improved accident frequency method.the spatial granularity of the identification results of traffic accident-prone points is more fine.③Follow-up research should strengthen traffic safety education and publicity for drivers,enhance traffic law enforcement,and further improve the traffic safety level of expressways in mountainous areas.