东南大学学报（英文版）2005，Vol.21Issue(2)：225-228,4.
交通分配中转向流量的直接计算方法
Direct computing methods for turn flows in traffic assignment
摘要
Abstract
Two methods based on a slight modification of the regular traffic assignment algorithms are proposed to directly compute turn flows instead of estimating them from link flows or obtaining them by expanding the networks.The first one is designed on the path-turn incidence relationship,and it is similar to the computational procedure of link flows.It applies to the traffic assignment algorithms that can provide detailed path structures.The second utilizes the link-turn incidence relationship and the conservation of flow on links,a law deriving from this relationship.It is actually an improved version of Dial s logit assignment algorithm.The proposed approaches can avoid the shortcomings both of the estimation methods,e.g.Furness s model and Frator s model,and of the network-expanding method in precision,stability and computation scale.Finally,they are validated by numerical examples.关键词
转向流量/交通分配/Dial算法/直接计算方法Key words
turn flow/traffic assignment/Dial s algorithm/directly computing method分类
交通工程引用本文复制引用
任刚,王炜..交通分配中转向流量的直接计算方法[J].东南大学学报（英文版）,2005,21(2):225-228,4.基金项目
The National Natural Science Foundation of China (No.50378016). （No.50378016）
