The Road Vehicles (Authorisation of Special Types) (General) Order 2003

19.—(1) This paragraph applies to determine the maximum weight that may be transmitted to the road surface by the tracks of any engineering plant that is a track-laying vehicle or a wheel-track combination vehicle.

(2) The weight transmitted to any strip of road surface on which each track of the plant is resting must not exceed the following (measuring the strip of road surface referred to in those limits as the distance contained between any two parallel lines drawn on the road surface at right angles to the longitudinal axis of the plant)—

(a) if the strip of road surface measures a distance of 0.5 metre or less, the weight must not exceed 11,500 kilograms;

(b) if the strip of road surface measures a distance that lies between 0.5 metre and any greater distance up to, and including, 2 metres, the weight must not exceed the sum of—

(i) 11,500 kilograms; and

(ii) an additional weight allowance which is to be calculated by reference to the difference between 0.5 metre and the overall measurement of the strip of road surface, with additional weight being allowed in respect of that difference at a rate of 7,500 kilograms per metre;

(c) if the strip of road surface measures a distance of more than 2 metres, the weight must not exceed the sum of—

(i) the weight determined in accordance with paragraph (b), as calculated in respect of the first 2 metres of the measurement of the strip of road surface; and

(ii) a further additional weight allowance, which is to be calculated by reference to the difference between 2 metres and the overall measurement of the strip of road surface, with further additional weight being allowed in respect of that difference at a rate of 2,500 kilograms per metre.