Traffic control optimization in the priority direction

The paper works out a mathematical model for urban traffic control on a network of five crossroads. The goal of the research is simultaneous optimization of green light and cycle duration giving priority to one direction. The bi-level hierarchical optimization is the applied formalization methodology. The optimization problems of both hierarchical levels are derived. The bi-level optimal results are compared with those from classical one-level optimization problem. The influence of the model's parameters is analyzed.