The exemption under clause 8 of a person using, or causing or permitting the use of, a vehicle fitted with one or more road-friendly suspension systems is subject to the following conditions:

(a) the mass of an 8 tyred tandem axle group must not exceed 17 tonnes;

(b) the mass of a 12 tyred triaxle group must not exceed 22.5 tonnes;

(c) the mass of a 2 tyred single axle on a bus must not exceed 10 tonnes;

(d) the mass of a 6 tyred tandem axle group on a bus must not exceed 14 tonnes;

(e) the mass of a combination must not exceed the sum of the allowable axle masses of the axle groups in the combination;

(f) an axle or axle group fitted after 1 January 2000 must be certified by the manufacturer as road friendly;

(g) the vehicle must comply with the axle spacing requirements set out in Schedule 2 ;

(h) the vehicle must be used only on the routes set out in Schedule 6 .