Basics Intersection Accident Mao Akira High Speed Public Road Operation And Safety Assessment Aerial Crafting Measures

At present,the accident rate of some expressway in China is high,which affects the safety of road users.The highway design is usually carried out according to the standard and standard,and the road safety evaluation is carried out in the design stage.However,the current design index has not been closely related to the safety level of the highway operation,and the traffic accident prediction technology is not mature enough.Targeted measures are of great significance for reducing the accident rate.This paper first maKes a field survey on the Yunnan mazhao expressway,and investigates traffic accidents,traffic composition and running speed in the past two years,and maKes a statistical analysis on the traffic safety status of mazhao expressway.This article first makes a survey on the Yunnan mazhao expressway,and investigates the traffic accidents,traffic composition and running speed in the past two years,and carries out statistical analysis to reveal the current status of the traffic safety of mazhao expressway.Secondly,remove the non road cause of traffic accidents;first from the starting point with 1Km as the unit of the whole line division of section division,and then 200 m,400m,600 m,800m as the moving step,get 5 groups of 1Km as the unit of the section of the accident distribution characteristics,respectively the number of traffic accidents occurred in each group of 1Km in the longitudinal coordinates,to more than a certain.The cumulative frequency of the number of accidents is the cross coordinate drawing cumulative frequency curve,and the number of accidents at the abrupt point of the curve is the standard,the multiple sections of the accident are identified,and then a group of 1 accidents with the largest proportion of the length of the multiple accident section and the most accident times is selected as the discriminant result,and the severity of the accident is considered.According to the influence of the discriminant results,the casualties were quantified,and the same section division,grouping method and identification method were used to identify the accident multiple sections.The discriminant results 2 were obtained,and two kinds of results were obtained,and the accident multiple routes of the mazhao expressway were obtained.Secondly,we use accident index identification index to classify the improvement order of accident prone sections.Thirdly,the accident multiple road identification index is used to sort the accident prone sections according to severity.At last,the comprehensive analysis is made from three aspects of road line,traffic engineering facilities and actual running speed,and the Countermeasures for improving traffic safety are put forward.