Where in pursuance of section 115(1) of this Act the licensing authority revokes a heavy goods vehicle driver's licence, the authority may—
Where the holder of a heavy goods vehicle driver's licence is disqualified under subsection (1)(a) above, the licensing authority for the traffic area where he resides may, in such circumstances as may be prescribed, remove the disqualification, but so long as the disqualification continues in force a heavy goods vehicle driver's licence shall not be granted to him and any such licence obtained by him shall be of no effect.
Where the holder of a full licence is disqualified under subsection (1)(b) above, a licensing authority shall not thereafter grant him a full licence to drive a heavy goods vehicle of any class unless satisfied that he has since the disqualification passed the prescribed test of competence to drive vehicles of that class, and until he passes that test any full licence obtained by him shall be of no effect.