As a child was crossing a street, he was run over by a van. The driver of the van claimed that he had not seen the child crossing in front of him and stated that he was not at fault because the child went under the car between the left front and rear wheels. There were two tire marks on the child's head and back of the trousers clearly indicating that the child was run over by a car. This kind of accident is rather simple, but if the police or examiner does not analyze the information regarding both the autopsy findings and vehicle investigation, the traffic accident reconstruction will be failed. In this case, we found two patheays of tire marks on the victim. One pathway was on the head and the other was on the trousers and they were almost paralleled. as one tire of a car could not make two paralleled pathways, we could conclude that the van ran over the child with the front and rear tire. It is clear that the child did not go under the car between the left front and rear wheels and he was not at fault. So, here we introduce the detail procedure of analysis of two tire marks on the victim.