Research on Safety Risk Assessment Technology of Expressway Traffic Operation

Abstract

Based on the theory of expressway traffic safety and the analysis of accident causes, the risks of expressway traffic operation safety is identified, and a multilevel traffic safety risk assessment system is established. Combined with the advantages of traditional risk qualitative and quantitative analysis methods, the Fuzzy Analysis Theory is introduced in the Analytic Hierarchy Process, the Analytic Hierarchy Process (AHP) is established to weight each related index, and finally the Fuzzy Analytical Hierarchy Process (FAHP) is applied to estimate the risk probability and risk loss. And then according to the risk probability, risk loss assessment and its grade standard, the two-dimensional risk assessment matrix is used to measure the traffic operation risk level and give basic risk management and control criteria. And finally based on the above evaluation system, the traffic safety risk of an important bridge across the Yellow River on the expressway from Beijing to Shanghai is analyzed and assessed.