Study On Highway Traffic Safety Evaluation And Develop The Evaluation System

Highway is an essential part of transportation infrastructure system,and it plays an important role in the development of the national economy.With the rapid development of our country's highway,the number of traffic accidents keeps increasing.Traffic accidents not only cause serious economic loss to the country,but also threaten the lives of the people.In order to avoid the happening of traffic accidents,we need to evaluate the road traffic safety.Traffic safety evaluation can also improve the working of the highway design,construction,and management.This paper focuses on how to establish a scientific,rational and systematic highway traffic safety evaluation system.The traditional highway traffic safety evaluation study is limited to the highway operation management stage.The study focuses on the "aftereffect" evaluation and lack the predictability of traffic accident.This paper analyzes the work of all stages of highway construction,and summarizes the influences of each stage work to traffic safety,based on driver,vehicle and road.Analyzing these factors,this paper constructs the safety evaluation systems at various stages to achieve quantitative and qualitative evaluation of highway traffic safety.When we calculate the index weight during the traffic safety evaluation,the traditional calibration scale method can't conform to the subjective cognition for people.So,this paper uses a new calibration scale method to solve this subjective deviation,and makes the evaluation results more logical.Because of the mix of qualitative indicators and quantitative indicators,this paper uses the secondary fuzzy comprehensive evaluation model based on improved normal distribution membership function.And this model makes the results of the evaluation is more scientific and reasonable.Based on VC++ 6.0,this paper develops a highway traffic safety evaluation system.This system includes the jobs query module,evaluation indexes query module,index weight calculation module,evaluation process query module and evaluation diary input module.We can use this system as a highway traffic safety evaluation tool.Using the system,this paper evaluates the Luo Fu highway traffic safety based on the parameter data of road.By analyzing the evaluation results of Luo Fu highway,it is proved that the model this paper built is practical valuable.