根据道路交通事故制动拖印可以判断肇事车辆的逃逸方向,推算肇事车辆制动前的车速,可以判断肇事车辆的接触点,但正确无误地认定还有一定的困难。道路交通事故现场勘查人员应根据制动拖印的明显的特征、刮痕、积聚物等痕迹物证来正确认定和准确测量。 According to the road traffic accident braking printing can determine the escape route of the vehicle accident, calculate the vehicle speed before the vehicle braking, you can determine the contact point of the vehicle accident, but correctly identified there are still some difficulties. Road traffic accident scene investigators should be based on the obvious characteristics of the brake printing, scratches, accumulations and other signs and evidences to correctly identify and accurate measurement.