3. In regulation 15(2), for sub-paragraph (j) there shall be substituted the following sub-paragraphs—
“(j)a trailer falling within regulation 16(3)(b), (bb), (bc), (d), (e), (f) or (g);
(ja)a trailer which is manufactured before 1st January 1997 and has a maximum total design axle weight that does not exceed 750 kg; or”.