Abstract: A multiple speed detection and control device for vehicles includes a speed detector associated with the vehicle speedometer arranged to sequentially detect multiple, predetermined, speed values, and an electric junction box connected in the major electrical lines of vehicle and connected with the speed detector, with the junction box having special fuses for the various electrical circuits, whereby the speed detector disrupts the fuses at the predetermined speeds to disrupt one or more of the electrical circuits to cause a particular failure of the electrical functions of the vehicle circuits, indicating speed above a predetermined speed, to an ultimate vehicle shut down above a maximum speed.