衝突対象の急な出現・急な動作変更が関わる交通事故の分析

抄録

In order to reduce traffic accidents, it is necessary to take measures against accidents caused by the sudden appearance or sudden behavioral change of transportation participants. In this paper, we conducted analysis for two objectives: to clarify the most frequent patterns of the above accidents, and to understand driver’s behavior that avoided them. In the case of the sudden appearance, the most frequent pattern of a collision is a traffic participant's failure to yield the right-of-way at a blind intersection. Drivers who avoided the collision tended to keep their vehicle velocity low and/or decelerate before the participant was visible. In the case of the sudden behavioral change, the most frequent pattern of a collision is abrupt deceleration of a leading vehicle while driving straight and the following driver unaware of the change. Drivers who avoided the collision tended to reduce acceleration before the leading vehicle's deceleration. Based on these results, we are going to develop a driver assistance system measured to the above accidents.