汽车安全车距模型影响因素分析

The Analysis of Factors Influencing Ohe Model of Auto Safety Distance

高速公路汽车追尾是一种严重的交通安全事故,人们试图从理论与技术上解决高速公路汽车追尾问题。其中,建立追尾的数学模型是研究追尾现象的基础。根据车辆的运行状态和制动规律,得出行车安全距离模型,同时对模型中的参数进行了说明和分析。采用MATLAB软件对高速公路车辆的安全距离模型进行仿真分析,得出安全距离随车速和附着系数的变化规律,寻求既保证车辆安全行驶又不影响道路通行能力合理的安全距离值,为降低高速公路事故率提供一定的依据。

Rear-end collision in high-way is a serious traffic accident, people heve been trying to solve the problem of rearend collision both from technology and theory. And the mathematical model of rear-end collision established in the process is considered to be the basis of studying this phenomenon. According to the operation state and braking regularity, The safety distance model is designed and the parameters of the model are illustratrated and analyzed. At the same time, MATLAB software was used to analysis the vehicle＇s safety distance model in high-way. A safe distance with speed and the variation coefficient was drawn which can not only avoid the accident from back vehicles but also have no effecton to the capability of traffic.