Paragraph 3
(1)
A goods vehicle falls within this paragraph if it forms part of a vehicle combination, other than an articulated combination, and the combination is such that—
(a)
in a case where all the vehicles comprised in it, or all of those vehicles except any small trailer, have relevant plated weights, the aggregate of the relevant plated weights of those vehicles, exclusive of any such trailer, does not exceed 3.5 tonnes, or
(b)
in any other case, the aggregate of the unladen weights of the vehicles comprised in the combination, exclusive of any small trailer, does not exceed 1525 kilograms.
(2)
In this paragraph “small trailer” means a trailer having an unladen weight not exceeding 1020 kilograms.