Oversaturated traffic signal optimization based on active control

In order to solve the decrease of traffic efficiency of road network, which is caused by overlarge traffic demand of urban regions at peak time, and resource waste of roads due to the heterogeneity of traffic distribution in regions, this paper proposes an active control model for oversaturated area based on border demand control and internal balance control of regional network, builds the bi-level programming optimization of objective function for boundary and internal signal control. The simulation results verify the validity of this method.