11.—(1) The overall width of a road recovery vehicle must not exceed the limits imposed by regulation 8 of the Construction and Use Regulations (restrictions as to width).
(2) But sub-paragraph (1) does not apply to a road recovery vehicle that satisfies the width conditions.
(3) The width conditions are that—
(a)the road recovery vehicle is a trailer;
(b)the trailer is used only for, or in connection with, the recovery of vehicles of a description that can only safely be recovered by a road recovery vehicle with an overall width exceeding the limits imposed by regulation 8 of the Construction and Use Regulations; and
(c)the overall width of the trailer does not exceed 3 metres.