Optimal control model for urban freeway corridor under incident conditions

Traffic control and management are effective measures to solve the problems of traffic jam. The optimal control model for freeway corridor is developed under incident conditions, which is in the form of minimization of the summation of the square of the difference between traffic demand and capacity at each intersection and on the freeway bottleneck section. The model optimizes control parameters of phase splits at arterial intersections, off-ramp diversion rates at upstream off-ramps and on-ramp diversion rates at downstream on-ramps. In the end, the objective function is discussed and the optimal control model proved simple and practical.