This is actually an automatic traffic control system. But here, we are providing a highest priority to ambulance. It is done by clearing the path for its easy passage, by controlling traffic control signal light systems in junctions. Several attempts have been made to design efficient automated systems to solve this problem. Most present day systems use pre-determined timing circuits to operate traffic signals. However these systems are inefficient because they do not operate according to the current volume of traffic at the crossing. It is often seen in todays automated traffic control systems that the ambulances/emergency vehicle getting caught up by a Red traffic signal and wasting valuable time. To solve this problem and we propose the idea of automatic traffic controller for ambulance emergency. Here differential priorities can be assigned to vehicles such as ambulances, ...