A New Measure for Transportation Network Efficiency and Its Appilication

A network efficiency measure for transportation congested networks,which reflects the influence of demands,costs,flows,and behavior on transportation network efficiency,is proposed in this paper.Accordingly,a method for evaluating the importance of the component(as nodes and links) is developed,which can be used to distinguish the important nodes and links in the networks.The results denote the rationality of the efficiency measure and the importance evaluating method,for the data computed by this method conform to the practice of the transportation networks and confirm that the network efficiency and the importance of the network components are all related to the network flows.