Search

To ensure the safety of the urban transit network so as to improve the operation efficiency of the entire traffic network, this paper took the transit network of Chengdu city for instance, it analyzed the invulnerability under random and deliberate attacks based on revealing the network topology. The simulation results show that the node number removed from the network affects the invulnerability little in both random attacks and deliberate attacks on the basis of node degree. At the same time, it finds that the less node number removed from the network, the worse invulnerability the network shows in deliberate attacks based on not only node betweeness but node efficiency. Furthermore, the impacts of deliberate attacks based on node betweeness on the network invulnerability are more remarkable than those based on node degree and efficiency. [ABSTRACT FROM AUTHOR]