20In Part I of Schedule 1 (annual rate of duty on certain mechanically propelled vehicles) after paragraph 3 there shall be added the following paragraph—
“4In its application to Northern Ireland, this Part of this Schedule shall have effect as if—
(a)in paragraph 2(a), for “1933” there were substituted “1935”; and
(b)in paragraph 3, in the definition of “weight unladen”, for “section 190(2) of the [1988 c. 52.] Road Traffic Act 1988” there were substituted “Article 2(3) of the [S.I. 1981/154 (N.I. 1).] Road Traffic (Northern Ireland) Order 1981”.”