最短路-最大流交通分配法

为确定公路网各路段交通量,在最短路交通分配法的基础上,引入了求最短路上最大流的分析技术,提出了最短路上最大流交通分配计算方法。依据对公路网中不同路段初定的技术等级所具备的最大服务交通量和拥挤度的要求,确定出该路段的容许交通量,当路段所分配到的交通量累计达到这一量值时,及时地对路段技术等级进行调整,进而对该路段的路权与容许交通量进行适时的调整。算例表明:该计算方法有效地提高了交通分配过程中有关路权处理的整体质量,较现行的最短路交通分配法和交通容量限制分配法的分配结果更趋合理。

Traffic volume assignment method with maximum flow of minimum distance

In order to determine traffic volume of each section of highway,on the basis of an analysis method named traffic volume assignment method with minimum distance,authors put forward a method of finding maximum flow on a line of minimum distance,and introduced the calculating model for the method.According to the request of maximum traffic volume and crowd decided by technological class of each section of the highway,allowable traffic volume was obtained.When traffic volume assignment was as to some value,bank of road technology need be adjusted,after which road weight and allowable traffic volume were adjusted.The result shows that this method improves the quality of whole traffic volume assignment process,and it turns out more reasonable than minimum distance methods and capacity limit assignment method.