Research On Freeway Interchange Evaluation And Design Of Security

The interchange is an important part of the highway,the safety assessment is to improve highway safety and design of an important stage.If interchange designed not pay enough attention to their security,it is easy to traffic safety and security.Thus,the highway interchange design and safety evaluation is more important.On the highway interchange in terms of security,the subjective factor is the human factor.When driving on the interchange,the driver for some signage,markings and other traffic on the interchange facilities are not familiar with the instructions on the driving environment freeway interchange on the suited,there are some random change lanes,parking,etc.behavior,which will bring to the motorway interchange traffic hazards,reducing its security.Objective factors highway interchange there are many,such as: Interchange cross type,location and interchange spacing,geometric linear ramp,ramp entrances,sight distance requirements.These factors are driving the vehicle on the highway interchange on the security risk.The paper analysis the impact of this factors to traffic safety and establish the interchange safety evolution system..Based on the operation speed,this paper evaluates the index of horizontal,vertical and cross plane and made the process of “design-evolution-redesign”.Highway interchange safety evaluation and design analysis,helps choose the right type of interchange,determine a reasonable distance of the Interchange and Cross design specifications to optimize traffic horizon and security requirements,to improve security throughout the highway interchange and reduce traffic accidents.Expressway Interchange safety evaluation is accompanied by interchange design process carried out.Expressway Interchange safety evaluation is accompanied by interchange design process carried out.In this paper,the highway interchange security issues,to interchange the safety evaluation and design of the main line,and Shanxi Province,the West Ham NOL highway MaZhuang North Terminal Interchange example,the interchange security evaluation and design of a concrete analysis,safety evaluation and design from several aspects of the interchange selection,site selection,spacing requirements,horizontal alignment,cross-sectional,longitudinal and line of sight requirements,and in accordance with traffic safety Causes Act,affecting interchange of various safety factors were analyzed and evaluated,combined with our existing norms and standards,a set of suitable for China evaluation for the future security of the highway interchange evaluation and design for reference.