Abstract: This study analyzed injuries of motorcycle occupants and the trace evidence of motor vehicles in 3 cases of motorcycle accidents.Due to differences in positions,postures,and responses,the driver and passenger showed their unique injury patterns and characteristics,which could be verified by analysis of trace evidence of the vehicles.It provided some common features from these cases and could be useful to determine the responsible parties and to determine who was the driver.

Key words: motorcycle accident, motorcyclists, manner of injury, forensic medicine