The DBL system is a safety device which activates a flashing stop light in order to warn vehicles behind of an intense and sudden braking. The device, when properly mounted on the motorcycle, is activated when the vehicle undergoes a sudden deceleration, by flashing the stop light with a frequency of 4 Hz. The DBL is activated as soon as the rider brakes suddenly and continues to work for the next 4.5s even with less deceleration. The device will not operate at speeds under 40 km / h. The DBL can be connected to the bike’s rear light, or to our multi-functional indicators: FR125/FR155/FR165. The DBL is an accelerometer and consequently doesn’t require any connection.