Analytical Method of Traffic Conflict at Urban Road Intersections Based on Risk Region

Abstract:

A two-stage method of traffic conflict analysis was proposed based on risk region. By using the inD dataset， traffic conflicts were recognized with the calculation of time to risk region（t_TTR）， and then the degree of traffic conflict risk was judged by risk region duration. Compared with the method based on time-to-collision（t_TTC）， the proposed method can not only identify rear-end conflicts and crossing conflicts more effectively， but also characterize the degree of traffic conflict risk at different times.

Key words:traffic safety;traffic conflicts;urban road intersections;inD dataset;risk region