You need to design a four way (North, East, South, and West) traffic control system. Each direction has Green, Yellow, and Red signal lights. Each signal light has a fixed duration. Traffic is allowed only in one direction at a time according to a fixed sequence (N-W-S-E). Add a pedestrian crossing button, when pressed, current direction of traffic completes, then all the directions to be turned Red for some time. Then the sequence should continue