本文对云南省已建成的高速公路路网,从道路基础设施和交通运行角度测评路网中交通事故发生的概率及损失的可能性,并基于评价结果制定最优化的安全完善策略,量化未来安全效果。且针对评价出的危险路段,楚大高速公路中的一段进行安全改造设计,提升行车安全。 This paper evaluates the probability and loss of traffic accidents in the road network from the perspective of road infrastructure and traffic operation based on the completed expressway network in Yunnan Province. Based on the evaluation results, an optimized safety improvement strategy is formulated to quantify the future safety effect. And for the assessment of the dangerous sections, a section of the highway in Chu highway safety design to enhance traffic safety.