A Twotier Network Traffic Congestion Propagation Model Considering Multiple Warning Messages
In order to better reveal the propagation mechanism of urban traffic congestion,this pa-per proposes a two-layer network congestion propagation model coupled with multiple warning information subnetworks and traffic road subnetworks,and explores the propagation mechanism of urban road congestion risk under multiple warning information.The model establishes a state transfer tree based on propagation dynamics and analyzes the propagation threshold using microscopic Markov chain(MMCA).Finally,the impact of multiple warning messages on the propagation of urban traffic congestion is analyzed through simulation experiments.The experimental results show that pro-moting the propagation of"fast"warning information and inhibiting the spread of"short"warning infor-mation can play a positive role in reducing traffic congestion pressure.
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