(1) A full or limited licence is effective for a period of 12 months commencing on the date it is granted.
(2) A provisional licence is effective for the period or until the expiry date stated in it.
(3) Subsections (1) and (2) apply unless the licence is—
(a) cancelled under section 27 or 51; or
(b) suspended under section 51 or 53; or
(c) surrendered by its holder in accordance with section 31.