Signal control of two-way traffic arterials

Studies a signal control method which controls congestion lengths on the two-way traffic arterial systematically. The volume balance is held for each lane at each signalized intersection of arterials for a certain duration. The congestion mechanism which plays an essential role to control congestion lengths is described quantitatively based on the volume balance for each lane at each signalized intersection. The signal control system of the congestion length is described by a nonlinear time-varying discrete dynamic system and synthesized by using the feedback control. A balance control algorithm in which the three signal control parameters consisting of the cycle length, green split and offset are controlled systematically so as to minimize the sum of congestion lengths on the arterial is presented. From the comparison between measurement values and simulation values, it is confined that the balance control algorithm works effectively to reduce the congestion lengths on the arterial