On-Ramp Dynamic Coordination Based on Grey Wolf Optimization

In order to prevent nonrecurrent traffic congestion on expressway, a method of dynamic coordination control of ramp is proposed. In order to prevent the on-ramp from overflowing, the queue length of the on-ramp is included in the constraint conditions. A ramp dynamic coordination control model consisting of macro traffic flow model, ramp queue length model and congestion queue length model was established. Grey wolf optimization (GWO) algorithm is used to solve the dimensionality disaster problem. Finally, MATLAB simulation software is used to verify the simulation results show that the control system has good dynamic performance, which can effectively reduce the traffic congestion caused by traffic accidents.