Abstract: A deceleration light warning system has a pressure sensor monitor coupled to an acceleration pedal of the vehicle. The pressure sensor monitor is used for monitoring pressure applied to the acceleration pedal. A controller is coupled to the pressure sensor. The controller is used for receiving a signal from the pressure sensor and for calculating the pressure applied to the acceleration pedal. A light warning system is coupled to the controller and to the vehicle. The light warning system is used for receiving a first signal from the controller to illuminate when the pressure on the acceleration pedal decreases and for receiving a second signal from the controller to deilluminate when the pressure on the acceleration pedal is one of a constant or increases.