| Mountain highway is an important infrastructure to drive the economic growth of mountain area,realize the balance of national economy and material culture,and fully develop.However,mountain roads are subject to objective conditions,with complex terrain and changeable environment,and traffic accidents are frequent and serious.Therefore,based on the structural equation model,this paper studies and analyzes the causes and weights of influencing factors of highway accidents in mountainous areas,which is of great significance for the governance of traffic safety problems and the improvement of operation safety.First of all,based on the research status at home and abroad,through the investigation of a domestic mountain road traffic design case,this paper uses Google Panoramic Map to compare and analyze the traffic safety design of mountain roads in Japan,and summarizes the characteristics and accident prone characteristics of mountain roads in China.By means of FTA,this paper makes a qualitative analysis of typical traffic accident cases in mountainous areas,and excavates the specific causes of people,vehicles,roads,environment and management factors related to the accident layer by layer.Based on the classic accident cause model and causal chain theory,this paper explores the influence mechanism of people,vehicles,roads,environment and management factors on the traffic safety of mountainous roads,It provides a theoretical basis for the index construction of the influencing factors model of highway traffic safety in mountainous areas.Secondly,from the perspective of mountain road safety analysis,through mathematical statistics,expert scoring and questionnaire survey,this paper analyzes the traffic accident data of a certain section of mountain road,and determines the factor evaluation indexes of 6potential variables and 19 observation variables.SPSS software is used to test the reliability and factor analysis of the data,The structural equation analysis model(SEM)of influencing factors of highway safety in mountainous area is established.The path coefficient among variables is obtained by AMOS software.The influence weight of human,vehicle,road,environment and management factors on highway safety in mountainous area and the importance of each observed variable to its potential variable are determined.Finally,based on the current situation of mountain road safety accident prevention and the results of structural equation model analysis,from five aspects of human behavior consciousness,vehicle inspection and supervision,road condition improvement,bad weather prevention and traffic management control,the paper puts forward specific suggestions and measures to prevent and control mountain road traffic accidents and improve mountain road safety environment,It has certain engineering practice significance. |
