Fuzzy Comprehensive Evaluation Of Topsis Based On Expressway Traffic Safety Facilities

Expressway traffic facilities in the construction of China’s economic development is an important part of its construction and development will directly affect the pace of economic growth and social development of our country. Expressway traffic safety facilities is an important part of expressway, the level of the expressway to reduce traffic accidents and guarantee the safe and comfortable, eliminate all kinds of interference of train drivers, improve road traffic service level plays an extremely important role. Based on a comprehensive evaluation of expressway traffic safety facilities system of expressway traffic safety facilities set up, management and service level and the status quo to make effective evaluation. Through reasonable and effective evaluation system, the hidden safety problems can be found in a timely manner, to master the inherent law of traffic safety development evolution, so as to guide on the technical management and administrative management of traffic safety management policy. Therefore, the expressway traffic safety facilities system analysis and comprehensive evaluation study has very important practical and theoretical meaning.In this paper, based on the current status of our country expressway traffic safety facilities, from the perspective of system, the system composition, evaluation of expressway traffic safety facilities system of the basic elements has carried out a detailed analysis, and specifically discusses the expressway in our country present situation and the present situation of safety evaluation, safety facilities for building expressway safety facilities, the establishment of evaluation index system laid a foundation. According to the methods and principles of evaluation index system building, and considering the actual situation, the index 7 items including primary, secondary index of 23 expressway safety facilities primary evaluation index system, and further details the basic meaning and calculation method of specific indicators. Finally, through comparison and analysis of existing index screening methods, introduction of a rough set theory.By combining the basic characteristic of the expressway traffic safety facilities and the characteristics of its evaluation index system, the safety facilities system of the existing comprehensive evaluation methods are analyzed, through comparing final screening of all kinds of evaluation method, finally to approach the ideal point method based on fuzzy comprehensive evaluation as evaluation method. Then, close to the ideal point method were described in detail the concrete calculation method of determining the weight in the original evaluation and evaluation of the link length, give full consideration to the fuzzy comprehensive evaluation method can be weighted summation method is used to determine the evaluation section of a final total, the advantages of the existing fuzzy comprehensive evaluation method on the basis of innovation, on the one hand, can evaluate the segmented sections, on the other hand, through the summary can determine the score of all sections of the expressway safety facilities of the score, the expressway traffic safety facilities system to carry out more effective evaluation. And through the example of the expressway traffic safety facilities evaluation model is verified, the results table.