چكيده به لاتين
Traffic Conflict Technique is a complementary and alternative approach to traffic safety analysis based on the history of crash records. The purpose of this study is modeling the risk of accident between vehicles and pedestrian at the intersection based on traffic conflict indexes. Given that the risk of a combination of the probability of collision and the severity of the consequence of it requires the use of indicators that take into account both aspects; To that end, the indices of TTC and PET were used among the indicators in the research literature. In previous studies, for each indicator presented in the context of this technique, the threshold for the criticality of the conflict event has been introduced, but the research has not addressed the critical threshold of interference events by simultaneously considering several interference indicators. In this research, to match the Hayden study, user interactions are divided into three clusters of risk, serious interactions, potential interactions, and non-disturbance transitions. In addition, with the proposed model based on the DEA-DA technique, the boundary between risk clusters is determined. The rating of each Conflict event determines the placement of an event in a risk cluster. Another result of this study is the higher optimum weight of the PET index than the TTC, which suggests that the PET index plays a more important role in determining the cluster risk.
