Safety signaling device for motor vehicles

The present invention concerns a safety signalling device (1) for a motor vehicle (3) provided with an electric system connected to a power supply battery and with an actuation control (14) of the stop lights slaved to a pedal (18) of the brake of the vehicle; such a device (1) comprises: - at least one signalling light source (2); - an electric circuit (10) for supplying power and connecting between the light source (2) and a voltage reference (11, 13) of the electric system of the vehicle (3); - an electric connection (17) between the actuation control (14) of the stop lights and a terminal (23) with alternating voltage reference to activate the intermittent actuation of the light source/s (2) in conjunction with pressure on the brake pedal (18).