Paragraph 30 I1

Motor vehicles first used before 1st January 1960, used unladen and not drawing a laden trailer, and trailers manufactured before 1st January 1960 and used unladen F1, and which have not undergone substantial changes in the technical characteristics of their main components. For the purposes of this paragraph any determination as to when a motor vehicle is first used shall be made as provided in regulation 3(3) of the Construction and Use Regulations.