Research On Comprehensive Evaluation Of Driving Safety Of Mountain Roads Based On Cloud Theory

With the development of road traffic,traffic accidents are increasing.The road landscape directly affects the driver's driving conditions and driving psychology,which has an impact on traffic safety.And this is particularly evident in the mountain road.Therefore,it is of great practical significance to carry out research on traffic safety evaluation of mountain road landscape and to explore a comprehensive evaluation method suitable for this field.Based on the systematic review of the research status of road landscape and road safety evaluation methods at home and abroad,according to the actual situation of road in our country,the evaluation index system,the determination of qualitative index weight and the comprehensive evaluation method of road landscape on driver's driving safety conducted an in-depth study.Firstly,based on the study of relevant research data and comparative analysis of road landscape and safety evaluation methods at home and abroad,this paper clarifies the use of method to the road landscape safety evaluation,that is,the Cloud Model and the Cloud Barycenter Evaluation Method used into the road landscape traffic safety evaluation field,and this method made a detailed introduction.Secondly,according to the principles of constructing the evaluation index system,the clustering analysis method,expert consultation method and conference method are synthetically used to classify and filter the various risk factors of road landscape,and combine the constituent elements method to construct the fusion road Landscape engineering safety risk factors,natural landscape safety risk factors and cultural landscape safety risk factors of the three categories of comprehensive evaluation index system.Thirdly,the use of WeChat for questionnaire survey,this questionnaire method of low-carbon environmental protection,convenient and efficient,it is worth using.The weight of the evaluation index is obtained by using the cloud model transformation method.This method takes into account the fuzziness and randomness of the evaluation index,and realizes the reasonable transformation of the qualitative concept to the quantitative data.Finally,Based on the comprehensive evaluation model of road landscape traffic safety,this paper analyzes the safety risk of road landscape in Longtan area of Luoyang(Shijing-Hongyansi-Longtan gorge)by using the Cloud Barycenter Evaluation Method,and through the qualitative assessment of the cloud generator to achieve the overall and local step by step simulation.The results show that the safety level of road landscape driving in Longtan Gorge(Shijing-Hongyansi-Longtan gorge)is relatively ''poor",and the evaluation results of natural landscape,engineering landscape and human landscape which is the three primary indicators are"poor",But by the normal cloud model simulation diagram,the traffic safety level of natural landscape is much better than the human landscape and landscape engineering,Compared with the natural landscape and the engineering landscape,the design of the human landscape has a greater impact on the local traffic safety.The evaluation results showed that the cloud model and cloud barycenter evaluation method are applicable to this field on some level,It is hoped that the evaluation results will be beneficial to the improvement of the local road landscape safety level.At the same time,it provides a new method for traffic safety evaluation too.