comparison, optimization, saturation flow method, expert system, hierarchical expert system, traffic, crossroad, traffic crossroads control

In this article we will focus on comparing the two methods for optimization of intersection control. First method is a saturation flow method, second method is an expert system that divides the time for each vehicle a given crossing direction based on expert knowledge. For both methods, simulations are created based on the real data of a selected crossroad in the city of Ostrava. Based on these simulations the methods are compared. Subsequently the comparison is evaluated together with a description of the advantages and disadvantages of the individual methods. The comparison is provided based on real traffic data of a selected crossroad in the city of Ostrava.