three lights in a vertical arrangement red, yellow and green often mounted on a metal or plastic post typically found near roads and intersections may have a timer or button to control when the lights change may have a sensor to detect when cars are waiting at the intersection
trafficlight which has three lights in a vertical arrangement trafficlight which has red, yellow and green trafficlight which often mounted on a metal or plastic post trafficlight which typically found near roads and intersections trafficlight which may have a timer or button to control when the lights change trafficlight which may have a sensor to detect when cars are waiting at the intersection