货车集结过程中车组大小规律性分析

应用数理统计原理,阐述货车集结过程中车组大小分布规律的方法与步骤。以贵阳市南站南宫山方向和六盘水南方向的大量实测数据进行统计分析,并应用皮尔逊准则进行检验。当车流量较小时,车组大小服从负指数分布;车流量较大时,车组大小不服从负指数分布而服从某种分段函数,得出车流量的大小影响车组大小分布。

Analyze the Regularity of Car Group Size of Truck Accumulation Process

With the application of mathematical statistics theory, it expounds the methods and procedures of researching the regularity of group size in truck accumulation process. And analyze a large number of ex- perimental data of Nangong hill and Liupanshui south direction in Guiyang Southern Station, then applied Pearson criterion to test. When the traffic flow is small, the car group size obey negative exponential dis- tribution, in addition, when the traffic flow is high, the car group size does not obey negative exponential distribution but certain Piecewise function, reached a conclusion that the size of traffic flow effect the dis- tribution of car group size.