Institute of Transportation, MOTC

　　Traffic calming has improved the poor traffic condition of local streets and become more popular than before. Since countermeasures used in traffic calming are merely planned and designed based on practical experiences, to develop a theoretical method for evaluating the performance is then necessary. In this research, the risk indexes of pedestrian－vehicle conflict with respect to traffic safety, including exposure index and severity index, are developed. The times of the pedestrians keeping away from the passing vehicles are adopted in the exposure index, and the kinetic energy of vehicle impact on the pedestrians are considered in the severity index. The risk indexes have been verified to have reflected the traffic safety condition of local streets.