17.—(1) The power to make regulations conferred by section 12 of the Roads Act, 1920, shall include—

(a) power to make regulations requiring a person applying for a licence under section 1 of the Finance (Excise Duties) (Vehicles) Act, 1952, in respect of a mechanically propelled vehicle to produce in prescribed cases such certificate under this Part as may be prescribed and any other prescribed document for the purposes of this Part,

(b) power to make regulations providing for the insertion in prescribed cases by the licensing authority of prescribed particulars on certificates and documents mentioned in paragraph (a).

(2) In this section “licensing authority” means the council of a county or the corporation of a county borough.