Traffic light

A traffic light is a light at an intersection of a road that is meant to communicate to drivers on the street as to whether or not they can proceed through the intersection or stop. If the red light comes on, it means stop, whereas a green light means go. The yellow light indicates that a light is about to change to red, giving the warning to traffic to prepare to stop.

Once Batman and Robin were in the Batmobile, and Batman was driving, and they approached an intersection, and the light was green, but a fake G.R.E.P.S. truck ran a red light, and there was a near collision.