中文摘要：

在这封信，一个未被证明的最佳的速度模型被建议假定死有在连续汽车之间的差距的增长的相对速度死亡的效果。数字模拟被执行测试这个模型是否能正确地描绘 braking 过程。模拟结果与观察数据显示出好同意。关键词交通流动 - 汽车追随者模型 - 中国(资助号码 10202012 ) 的国家自然科学基础支持的最佳的速度模型 MSC 2000 76P05 工程

英文摘要：

In this letter, an improved optimal velocity model was proposed that assumes the effect of relative velocity deceases with the increment of gap between successive cars. Numerical simuation was carried out to test whether this model could depict the braking process correctly. The simuation results show good agreement with observed data.