Modeling of Urban Traffic System Based on Dynamic Stochastic Fluid Petri Net

Urban traffic system,which is characterized by dynamics,concurrence,and synchronization,is a hybrid dynamic stochastic system involving discrete and continuous behaviors.Modeling and analyzing the urban traffic system is the key to deeply understand the whole traffic and to better guide and control of urban traffic system,especially under the current traffic status characterized by frequent congestion and considerable complexity.The study proposed the dynamic stochastic fluid Petri net(DSFPN) with well mathematical analysis ability,which provided a good description of the dynamic and stochastic character of the urban traffic system.The dynamic attributes and the stochastic actions of urban traffic system can be modeled by DSFPN.Then an example of an intersection are modeled and presented in this paper.The simulation and performance analysis of urban traffic system model is introduced to indicate the validity of the DSFPN.