309(5)On receiving the results of an examination by a medical practitioner under paragraph (1)(
a), or on receiving the additional information requested under subsection (3), the Registrar shall suspend or revoke the licence of the licensed driver if the Registrar is satisfied on the basis of the results of the examination, or on the basis of the results of the examination and the additional information requested, that the licensed driver, because of physical or mental impairment, disease or condition, is not able to operate a motor vehicle with safety on the highways.