Study On Traffic Safety Technology Of Road Accident-prone Highway In Rural Areas

In recent years,the rural road has achieved tremendous results.The number of vehicles continues to increase.But,there are many deficiencies in the road itself,such as long-graded vertical slope,poor line-of-sight,non-mixed travel,sharp bends and other factors of crisis driving safety,which makes the rural highway traffic accident rate increase continuously,which has become a problem that must be solved to restrict rural economic development.First of all,we use domestic experience and information to define the rural roads and classify them according to their functional level.At the same time,based on traffic surveys and data collection in the field,we have provided design vehicles and vehicle sizes that are suitable for use in rural areas.Combined with the existing specifications,the design speeds of different road functions are given.The accident-prone road sections are defined through existing experiences at home and abroad.Afterwards,through the data collection and data analysis of traffic accidents,the traffic accident-prone road sections in rural areas have been drawn up to provide reasonable measures for the following texts.Then through the study of the characteristics and influencing factors of traffic accidents,it provides theoretical and technical support for the solution of road safety problems.Finally,we designed the safety of the accident-prone road sections.Through the knowledge of vehicle dynamics to study the maximum longitudinal slope and slope length limit,to solve the longitudinal slope problem;we determine the dominant vehicle type and machine non-circumference threshold in the plain area through field traffic investigation and simulation.According to the road work and traffic conditions,different types of non-separation driving models are set up,and non-motorized lanes and wrong lane parameters are calculated.Through the study of the transverse net distance and the line of sight triangle,a good visual distance between the road section and the intersection is ensured.For roads with restricted roads,safety protection facilities have been studied to ensure road safety.