Investigation of Influence of Pedestrian Characteristics on Their Safety at the Functional Area of Un-Signalized Intersections Conflicts

Pedestrians as vulnerable road users have a very high sensitivity facing vehicles. The number of pedestrians killed or injured in traffic accidents is very significant which a noticeable percentage of them have occurred at un-signalized intersections. Four-leg un-signalized intersections are parts of the road network in which pedestrians are unsafe. In this paper, the main purpose is investigation of pedestrian safety facing vehicles at functional area of four-leg un-signalized intersections. Therefore to evaluate the traffic conflict safeties, Time to Collision (TTC) and Post Encroachment Time (PET) indexes were used. Particularly The effect of pedestrian characteristics on the safety level of conflict was evaluated by collecting field information and statistical studies. The data was obtained by video-recording of the functional area of Imam Hossain intersection in Hamadan city and then using ANOVA statistical analysis, the effect of pedestrian characteristics on the safety level of intersection was evaluated. Results show that:-The male pedestrians are safer than female (The differences between them at PET and TTC indexes are 0.11 and 0.08, respectively). -The young pedestrians are safer than elderly (The differences between them at PET and TTC indexes are 0.10 and 0.04, respectively). -The right-direction pedestrians are safer than left-direction (The difference between them at PET index is 0.03).