An Adaptive Traffic Signaling For Roundabout With Four Approach Intersections Based On Fuzzy Logic

Roundabouts are widely used in Gulf area for organizing traffic at road intersections. Big traffic jams, especially at the roundabout intersections, are happening at peak hours. Since there is no traffic signal to organize the traffic at these areas, a traffic policeman has to stand there for long hours in the very hot weather (in summer in Gulf area) to organize the traffic. Off-line traffic signaling cannot solve the problem because it would not take into consideration the rush hour traffic, or that one direction of a fourway intersected roundabout may not have much traffic. A lane may be really busy because it is an alternate route due to an accident in the other route. It would be too difficult for a person to reprogram them to be robust enough to handle all possible scenarios effectively. Therefore, adaptive traffic signaling would solve the problem. This research paper aims at using intelligent traffic signaling system,based on fuzzy logic, that can organize the vehicles entering a roundabout according to both traffic needs and vehicles priority in those areas.