<p>A device is described for a parking brake system for vehicles, said parking brake comprises a brake lever that can reset the brake system between an active brake position and a neutral position, and also a transmission mechanism (18) to make it possible to reset the brake lever from the braking position, with the mentioned operation of the transmission mechanism (18) being dependent on the ignition system of the vehicle being activated/turned on. The device is characterised in that a blocking appliance with a blocking peg that is in blocking engagement with the transmission mechanism (18) when the appliance is not supplied with a voltage from the ignition system, and disengages from the blocking engagement with the mechanism (18) when the appliance is supplied with a voltage.</p>
