Abstract: There are many problems of congestion with traffic light in many cities. This problem of congestion can be caused by long time delays of traffic light’s Red light. When there are emergency case at traffic light intersection which are always busy with many vehicles, this problem can also be caused. The possibilities of traffic jams caused by traffic light can reduce by using the Programmable Integrated Circuit (PIC) 16F877A microcontroller. The intended system is to change the sequence back to the normal sequence after triggering for the emergency modes by using the controller. Many accidents which often happen at the traffic light intersections will be reduced because of using this system.