Abstract:

Based on user equilibrium, the complex traffic behaviors in regular networks, random networks, smallworld networks and scalefree networks were investigated. Within user equilibrium, BPR function was used as link cost function, and two types of link's practical capacity which is a parameter in the BPR function were analyzed in detail. In order to describe the congestion of the network, the relationship between the rate of links whose load is larger than its practical capacity and traffic demand was studied. Finally, the load distribution in the above four urban traffic networks were discussed.

Key words: engineering of communication and transportation, congestion, user equilibrium, load distribution