1.—(1) In this Act—

the expression “the Principal Act” means the Road Transport Act, 1933 (No. 8 of 1933);

the expression “duly licensed” means duly licensed in Saorstát Eireann under section 13 of the Finance Act, 1920, as amended by subsequent enactments.

(2) Every word and expression to which a particular meaning is given by the Principal Act for the purposes of that Act has in this Act the meaning so given to it.