Abstract: Based on the motor vehicle travel behaviour, this paper discusses the speed-change lane length under influence of road grade.The calculation methods and formulas of acceleration or deceleration are given on level grade, and the calculation formulas of speed-change lane length amendment coefficient are also presented on slopeway.Moreover, typical motor vehicle in China is examplified and the results can be used for design references.

Key words: motor vehicle travel behaviour, speed-change lane, amendment coefficient

摘要： 以汽车行驶特性为基础,讨论了道路纵坡对变速车道长度的影响.给出了平坡时加、减速度的计算方法和公式,推导出了坡道上变速车道长度修正系数的计算公式.并以国产典型汽车为例进行了试算,为设计提供参考.

关键词: 汽车行驶特性, 变速车道, 修正系数