Wire-Free System and Method for Signaling Deceleration in Vehicles

A system for signaling vehicle deceleration having an acceleration sensor, processor, lamp controller, power supply, mount, and lamp. The acceleration sensor gathers acceleration data of the vehicle, and the processor interprets the acceleration data gathered. If, based on that data, the processor determines that the vehicle is decelerating beyond a preset threshold, the processor powers the lamp via the lamp controller. The system adjusts for various orientations and positions of installment.