Road accident risk assessment is an effective way to improve road safety.In order to realize road accident risk as-sessment from the perspective of road network features,the segment analysis-apriori(SA-Apriori)feature extraction algorithm was proposed by combining segment analysis and frequent set algorithm,and then the SA-Apriori road accident risk assessment model was built.Taking Dadukou District of Chongqing as the analysis object,a road accident risk classification system with road network feature variables as the index was established to evaluate its road accident risk level,and the effectiveness of the evalua-tion method was verified combined with the distribution of commercial points.According to the situation of road accident risk in Dadukou district,the management countermeasures and suggestions of road accident risk were put forward.The results indicate that the road accident risk assessment method has high reliability and can provide reference for road accident risk assessment based on road network features.
维普
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