5.—(1) Regulation 12 of the principal Regulations(1) shall be amended in accordance with paragraphs (2) to (4).
(2) In paragraph (2)—
(a)after the words “so that” there shall be inserted “, both with and without all its wheels in contact with the ground,”; and
(b)for “12 m” there shall be substituted “12·5 m”.
(3) After paragraph (2) there shall be inserted the following paragraph—
“(2A) In relation to a vehicle manufactured before 20th April 1999 paragraph (2) shall have effect as if the words “, both with and without all its wheels in contact with the ground,” were omitted.”.
(4) In paragraph (3), for “12 m” there shall be substituted “12·5 m”.
Regulation 12 was amended by S.R. 1992 No. 54, regulation 4(a) Regulations 12A and 12B were inserted by S.R. 1991 No. 420, regulation 6