Traffic Safety Evaluation Method for Highway Section Based on Fault Tree

In order to estimate the main reasons resulting in traffic safety decreasing of highway section,and give proper evaluation index weights,a traffic safety evaluation method for highway section was designed based on fault tree theory.The established method of fault tree,evaluation index and index weight determining method and comprehensive evaluation model were explained using the horizontal curve section as example.The proposed method was validated by true data of highway section.The result shows the proposed method not only can evaluate the overall safety of highway section,but also to determine main reasons resulting in traffic safety decreasing of highway section.