Traffic Light Control System using 434 MHz Radio Frequency

Abstract- Traffic congestion problem is the phenomena which contributed a huge obstacle to the transportation system. This will cause many problems mainly when there are emergency cases at traffic light intersections which are always busy and jammed with many vehicles. This situation becomes more crucial when special routing is not provided for the emergency vehicles such as ambulance, patrol car and fire truck when red sign light. To overcome this situation, a traffic light controller system for emergency vehicle using 434 MHz Radio and Programmable Integrated Circuit (PIC) is designed to help traffic control and also other road users when emergency situation occurs. The system works when an emergency vehicle approaching the traffic light intersections, the emergency vehicle will send a signal via dedicated device to the receiver at traffic light. The receiver or controller receives emergency signals; it changes the traffic red light to green light in a specific duration of time. This system will help to reduce accidents which happen at the traffic light intersections because of other vehicle had to huddle for given route to emergency vehicle. The traffic light control system for emergency vehicle using radio frequency (RF) assisted the emergency vehicle to cross at the intersection of traffic light. In the future, the development of this system can be improved by analyzing the stability of Radio Frequency system e.g. frequency range and can be developed for real traffic light system. Index Terms- PIC 16F877A, Radio Frequency (RF), Sequence Control, Traffic Ligh