<p>The emergency system for stopping vehicles consists in strategically providing a press-button which, in a case of emergency, may be actuated thereby causing the operation of an electric motor (3) and a hydraulic pump (4) which are part of the normal braking circuit (13), so that the complete stopping of the vehicle is achieved without having to step on the conventional brake pedal, either when the driver has a physical or mental problem or when a failure occurs in the normal braking circuit (13). <IMAGE></p>