中文摘要：

为了快速、准确地采集与汽车-两轮车磁随事故所需及时关注的17个敏感参数。为进一步获得这些参数的敏感性，提出了基于随机森林模型韵参数敏感性分析方法，并确定了各个需要及时关注的参数取值范围，再用所给方法分析了这些参数的敏感性。分析结果表明，汽车制动距离、骑车人和行人抛距在所有参数中对碰撞速度最为敏感。

英文摘要：

In order to collect trace information closely related to speed identification from the collisions between the two-wheeler and another vehicle, first 17 most important sensitive parameters related to collision speed were obtained through empirical analysis. And then, a method based on a random forest model to analyze the sensitivity of these parameters was proposed and the range of each parameter was determined. Finall~ these parameters were listed in order of importance, The results show that the car braking distance, the cyclist throw distance and pedestrians are most significant among 17 sensitive parameters related to collision speed.