Traffic Safety Evaluation Method for Freeway Section Based on Fault Tree
Expressway is the world's worst traffic accident area.Based on the accident tree analysis method,this paper builds an accident tree model of four typical sections of expressway(straight line,curved slope,tunnel and bridge),quantifies the severity of the impact of different factors on expressway traffic safety,revises the structural importance according to the actual accident probability,and proposes the road accident safety index ARSI.The weight of the index is close to the actual traffic situation,so the the objectivity and accuracy of the evaluation results are improved,so as to realize the micro-evaluation of highway sections.Some targeted suggestions are put forward to provide effective directions for improving highway traffic safety.
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