Abstract: Accident characteristics were analyzed for 51 cases of pedestrian-vehicle collision with video information selected from the National Automobile Accident In-Depth Investigation System (NAIS) database of China. The analysis contents included the pedestrian-vehicle collision critical scenarios, the pre-crash relative position of pedestrian-vehicle, the pedestrian collision dynamics response, the pedestrian-vehicle collision wrap around distance (WAD) distribution, the head impact point distribution and so on. The results show that 10 kinds of scenarios extracted basically covered the pedestrian-vehicle collision scenarios. The field of view (FoV) angle is more important for pedestrian protection than that for detection distance. The sedans are easy to cause positive rotation of pedestrians, while the single-compartment vehicles are easy to cause negative rotation of pedestrians. The WAD of pedestrian-vehicle collisions are mainly distributed on both sides of vehicles. The head impact points causing fatal injuries are mainly distributed in the lower half of front windshield, the middle part of the left and right sides, and the vicinity of pillar A. Therefore, using collision video information can improve the analysis accuracy of pedestrian-vehicle collision characteristics.

Key words: vehicle passive safety , pedestrian-vehicle collision , accident in-depth investigation , accident characteristics , critical scenarios