26.—(1) This paragraph applies to any slow plant that is a wheeled motor vehicle.
(2) Regulation 23 (wheel loads) of the Construction and Use Regulations does not apply to any wheeled motor vehicle that is designed and used solely for the purpose of laying materials for the repair or construction of road surfaces if the weight transmitted to the road surface by any two wheels in line transversely does not exceed 11,180 kilograms.
(3) Regulation 27(1)(f) (tyre tread) of the Construction and Use Regulations does not apply to any wheeled motor vehicle that—
(a)is designed for use in work of construction and repair of road surfaces;
(b)has wheels fitted with pneumatic tyres with smooth treads for such use; and
(c)is incapable by reason of its construction of exceeding a speed of 20 miles per hour on the level under its own power.