Identification And Cause Analysis On Accident Black Spots Of Mountainous Expressway

After rapid development for 30 years,China's expressway has now entered a comprehensive long-term development,for which safety of the highway has become the central issues which is more and more important.The accident black spots are the focus of research on expressway safety problem,which is directly related to the improvement of highway road safety;as a mountainous country,the seriousness and lethality of road accidents in mountainous expressway are much higher than those in the general area.Therefore,it is urgent to carry out research on the identification and cause analysis on accident black spots in mountainous expressway,and to solve the theoretical and practical problems in the distribution of accident black spots in mountainous expressway,accurate identification and genetic analysis.In order to put forward the identification model and cause analysis method on black spots of mountain expressway,The paper mainly does the following work.First,the paper defines the risk index to characterize the risk of accident-prone sections.Based on the analysis of the risk attributes of the expressway accident in the mountainous area,the risk curve model of the accident point is established.Considering the superposition of the danger,two accidents Point of the risk curve combination model,and then promote the multi-accident point of the risk curve model,so as to establish the mountain area of the whole section of the dangerous function and curve model;to determine the threshold of the accident black spots,combined with mountainous expressway risk Curve model and discriminant threshold,the establishment of mountainous expressway recognition model on accident black spot.Secondly,this paper improves the cause analysis method of accident black spots based on clustering analysis,and puts forward the research on the speed of the representative vehicle-car system,the slope of the road system and the radius of the curve,and the traffic of the traffic safety facilities Safety analysis,the cluster analysis is completed by means of SPSS tool,and the results of clustering are analyzed,and the cause analysis method of accident black spots of mountainous expressway is obtained.Finally,through the design and implementation of the experimental scheme,the paper analyzes the traffic accident data,the road line data and the traffic safety facilities of the typical mountainous expressway-Luo Luan Expressway.After the data is corrected and processed,Fault identification model and cause analysis method of mountainous expressway accident.The results show that compared with the traditional method,the identification model on accident black spots proposed by this paper has the advantages of accurate identification,objective and practical.The paper can improve the formation of accident black spots more comprehensively and systematically Reason for analysis.