Abstract: A safety control that can be used on all tandem wheel vehicles, except that throttle and engine ignition controls are additions to the structure of the safety control for motor driven vehicles. The driver can operate the following mechanisms: horn (motorcycle only), throttle (motorcycle only), wheel brakes, controllable legs, engine ignition switch (motorcycle only), locking devices in a predetermined sequence for up-holding the vehicle by applying only a single operation of the hand grip or foot pedal or both of them to prevent the vehicle from tilting over in an emergency or in an ordinary stop or parking or at a very slow speed of the vehicle. The driver does not necessarily use his feet to touch the ground to remain erect, nor to get off from the vehicle to stow up said legs by foot power, thereby allowing safety and ease in using a tandem wheel vehicle.