Object oriented program example: animated traffic lights on road intersection

classes and superclass are used to arrange flexible object oriented programming environment

Only 31 lines of code in start.m is used to control animated traffic lights on road intersection. LampSuperclass and three clases (trafficLamp, tLamps, map) are used in program. Classes define (1) single Red-Yellow-Green traffic lamp, (2) set of four lamps (North, South, East, West direction) and (3) map of street intersection. Menu is used to change the mode of traffic light operation.