Abstract: An amber warning light at the rear of a motor vehicle warns a following driver of the potential braking of the lead vehicle. Upon release of the accelerator, a first variable timer acts as a delay to allow for typical events, such as reacceleration, speed control initiation, manually changing gears or for braking. At the end of the first timer cycle, if one of the events has not occurred, the amber warning light is illuminated for a time period defined by a second variable timer. If one of the events takes place during the first timer cycle, the amber warning light is prevented from becoming illuminated. If one of the events takes place during the second timing cycle, the warning light is extinguished.