Abstract
The fuzzy inflow traffic control has been applied on urban expressway to maintain smooth and safe traffic. The advanced inflow traffic controller would be recommended corresponding to the recent progress of traffic control technologies as well as soft-computing. The flexible and robust traffic controller can be created with the formulation of fuzzy logic. Furthermore, the optimization of parameters for efficient traffic controller can be performed by genetic algorithm as well. It would be confirmed that the advanced inflow controller provides the efficient traffic on the urban expressway.