Abstract
The cascade failure problem has gained an increasing interest in urban road traffic network. Considering the intrinsic characteristics of urban traffic network, the traffic load has its specific regularity and traffic driving has certain preferences, this paper introduces the average distance and the state change time of road junction. Using the weighted method to combine the two aspects, a trust value model is got to measure the road congestion. Then in order to avoid the congestion of the failed road junction again in a short time, the multiple overload of the failed road junction is redistributed according to the trust value model. Finally, the cascade failure model is obtained. The cascade failure model is verified in scale-free network and random network. The joint parameters of load threshold and load allocation factor that can control the cascade failure scale in a certain range are obtained, which improves the robustness of the networks.
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