The present invention is intended to provide an EMG signal controller or a wheelchair using an EMG signal controller to allow full vehicular direct drive control, and wheelchair accessory control, by using one or more EMG sensors applied to certain muscles of a subject, and translating the movement of the muscles of the subject that the EMG sensors are connected, to electrical signals causing for the operation of a motorized wheelchair. The controller and wheelchair are designed specifically for paralyzed individuals with limited motion, but may be used by any subject with or without any physical or nervous system disabilities. The present invention further provides an emergency stop which is activated in the event that the subject using the wheelchair experiences a seizure or other neurological shock.