高速公路自由流状态下对运行车速模型的研究

Research on Operating Speed in Free Flow of Freeway

为达到在车速正态分布情况下由平均车速快速简便地得到线性几何设计所需的运行车速的目的,本文在大量实测数据的基础上,通过SPSS软件对我国部分高速路上自由流运行速度平均车速和运行车速的关系进行探讨,建立了符合两者关系的统计模型,得出两者之间的数值关系。这样的结论有助于分析高速公路的自由流运行速度特性。

Based on a amount of field datum,this paper builds the model between a verage speed and operating speed by discussing the relation of them in free flow of freeway by SPSS in order that operating speed of road geometrical design can be obtained quickly and simply by average speed in case of normal distribution. Meanwhile,the results will be helpful to analyze the property of operating spee d of free flow in freeway.