关于利用制动痕迹长度估算车速问题探讨  

On the Estimation of Vehicle Speed by the Length of Brake Trace

作　　者：贾常明[1] 

机构地区：[1]中国刑事警察学院,辽宁沈阳110035

出　　处：《中国司法鉴定》2013年第1期88-90,共3页Chinese Journal of Forensic Sciences

基　　金：国家自然科学基金资助项目(61071057)

摘　　要：目的采用理论、实验和实际案例相结合的方法,探讨"利用制动痕迹长度估算制动速度"的应用问题。方法通过20辆小型乘用车紧急制动实验,对制动距离、制动力上升时间、制动纵滑附着系数等数据进行分析。结果得出制动车速与估算车速有的差异比较大,有的差异比较小,分析了产生差异的原因。结论如果计算参数选取不当,利用制动痕迹长度估算制动速度的方法有很大的局限性。Objective To study the method for estimating vehicle speed by the length of brake trace on the basis of the theory,experiment and real cases.Method Emergent braking tests were carried out with 20 small passenger cars,and the data of braking distance,rising time of braking force and braking longitudinal slip adhesion coefficient were analyzed.Results Difference existed between the actual braking speed and the estimated speed,which was great in some cases.The reasons were analyzed.Conclusion The method of estimating braking speed by brake trace length has great limitation.

关 键 词：制动距离 估算车速 制动力上升时间 

分 类 号：U491.3[交通运输工程—交通运输规划与管理]