An integrated optimal control and algorithm for commuting corridors

An integrated optimal control model and its solution algorithm have been developed for commuting corridor management. Three traffic control measures, including ramp metering, intersection signal timing, and freeway flow diversion, have been incorporated and optimized simultaneously. As an improvement to our previous work, the presented model and algorithm have the following three unique features: (1) modeling traffic state evolution on surface streets with flow conservation within sections, flow transition between sections, and flow discharging at downstream intersections; (2) estimating time-dependent model parameters adaptively with real-time traffic measurements, rather than assuming as pre-determined; and (3) having a limited-step convergence property in its solution logic. Preliminary numerical tests have demonstrated the potential of the developed model and algorithm for integrated real-time corridor control.