Interactive Signal Control for Over-saturated Arterial Intersections Using Fuzzy Logic

On an arterial, over-saturated intersections raise the risk of congestion. Once congestion happens, it may spread to neighboring intersections along the road. This paper proposes an interactive fuzzy logic signal controller utilizing neighboring traffic information to avoid congestion under over-saturated condition. The fuzzy signal controller decides to extend, early cut or terminate a signal phase according to evaluation of traffic condition. The structure and method of fuzzy logic controller is stated. A simulation taken under Paramics is presented. Comparison with traditional vehicle-actuated method and local fuzzy control for signal intersection is also made. Results show the effectiveness of the proposed method.