中文摘要：

通过分析车轮与车身相互刮擦时所产生的刮擦痕迹，提出了在刮擦点的位置参数不能获得时，单纯依据刮擦痕迹包含的信息估计交通事故中肇事车辆速度的方法。

英文摘要：

Based on the analysis of the scraped mark made by a vehicle body and another vehicle tire, a method to determine the relative speed of the two vehicles is put forward, while the position of the point who made the scraped mark is not known.