27. (1) If—
(a) a vehicle does not comply with Part II;
(b) because of the size, shape or mass of any equipment or load that it is proposed that a vehicle should carry, the vehicle with the equipment or load would not comply, or may not comply, with any one or more of sections 9, 10, 11, 16, 23, 24, 25 and 26; or
(c) a combination of vehicles would not comply with section 34;
the Registrar may issue a permit for the vehicle or combination of vehicles to be used, or for the vehicle to carry the equipment or load, as the case may be, on public streets and in public places notwithstanding that the vehicle or combination of vehicles, or the vehicle together with the equipment or load, will not, or may not, so comply.
(2) The Registrar shall specify in a permit issued in respect of a vehicle or combination of vehicles under subsection (1) the provisions of this Act with which the vehicle or combination of vehicles, or the vehicle with its equipment or load, is not required to comply.
(3) A permit issued under subsection (1) remains in force—
(a) for such period not exceeding 12 months as is specified in the permit;
(b) for the purpose of enabling the vehicle or vehicles to be used to undertake a journey specified in the permit; or
(c) for the purpose of enabling the vehicle or vehicles to be used to undertake a journey specified in the permit within a period not exceeding 12 months specified in the permit.