In view of the limitation of the existing road traffic accident prone road section risk discrimination limited to the accident itself attribute, this paper proposed a new method of accident prone road section risk discrimination based on Arcgis, which can make the predictive simulation discrimination of the accident risk based on the road alignment condition and the vehicle distribution attribute. In this paper, GIS related technology is firstly used to import the target road section and complete a data processing, and then the processed data is run through invest model to obtain the results. The method is applied to the Ya’xi expressway in Sichuan province, and the results show that the discriminant method can realize the risk prediction and simulation of the expressway, which is an effective method for discriminating the road sections with frequent accidents according to the actual situation and intuitive results.

CICTP