Road Intersection Safety Evaluation And Improvement Based On Traffic Conflict Technique

With the rapid development of China's national economy,the construction projects of road has rising,the rapid development of road transportation. However, the rapid development of the road construction, operation and management in the same time, the accidents have show the seriousness of the problem, which aroused great concern and attention, especially in the road intersection's safety has more protruding. In addition, road intersection in the road network has an important function of diversion in turn and distribution, and on the whole road network has an important effection. Therefore, how to improve the road intersection traffic safety environment, capacity, maximize the use of the road network,this will be important and difficulty of the road intersection's research.Although the research of the traffic conflict technique had already begun, and fruitful research results, such as urban traffic conflict technique research, technology and theory of the traffic conflict, but the safty of road intersections of the research on relatively uncommon.Therefore, the paper to road intersections for the study, in the current situation of road traffic on the basis of drawing on research results related to the traffic conflict technique, implement the establishment safety assessment model of the road intersection,and research of safety improvement system on the premise of safety assessment.First of all, make a summary of the rapid development road construction, road safety and the development of road intersection safety,the same time, the paper the importance of safety assessment on the road intersection, the problem of safety assessment methods on traditional accident statistics and accident statistics means,then, proposed.the road Intersection safety assessment;By analyses the characteristics of the road traffic and the road intersections, and the research of road intersection safety influencing factors. For the following road intersection safety evaluation studies, this provide the basis to improve traffic safety, which can more accurately and comprehensive safety evaluation and improvement research.Secondly, the paper summarize the definition of traffic conflict, the mechanism of traffic conflict,define the seriousness of the traffic conflict, the number and seriousness of the impact of traffic conflict ,and implement the fundamental research of traffic conflict. based on this fundamental research to construct an integrated transport based on the seriousness of the conflict rate evaluation of security model of intersections; and use three-time traffic collisions of the peak, low peak, flat peak of the traffic, building security assessment for the number of road intersections based on the fuzzy-clustering model. For the future research of the road intersection construction and management,and provided a reference for solve the security issues.Following, based on the road intersections' safety assessment rating, from reducing conflict points and the energy of traffic conflict, the paper use of safety management policies, systems ,security education and safety improvement measures to support, targeted propose safety improvement of road intersections.Finally, the paper from the road intersection safety evaluation and improvement based on traffic conflict technique, and be an example.