The arterial highway in suburban areas, as the typical mixed traffic environment, produces more traffic collisions and accidents than other highway segment due to the complex road environment and vehicle composition. Based on the traffic conflict technique and combined with field survey data, the prediction model of traffic conflict level was proposed through a logistic regression method and the model validation was conducted. The relationship between various traffic conflicts and related influencing factors was analyzed. Furthermore, the highway traffic safety assessment method based on traffic conflict risk level was presented. The results of this paper could provide an alternative method for the traffic safety assessment of arterial highways in suburban areas.
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