Regulation 20 and regulation 22(7)
1. Maximum aggregate axle load(1) The maximum aggregate axle load in respect of the axles of a vehicle or combination is to be determined in accordance with the following table:Maximum mass according to axle spacing(2) In the table, distance refers, according to the configuration of the vehicle, to (a) the distance from the centre of any single axle to the centre of any other single axle; or(b) the distance from the centre of any single axle to the centre of the axle, in any group, that is furthest away from that single axle; or(c) the greatest distance between the centres of axles in any 2 axle groups.(3) The mass limits specified in the table apply to the sum of the mass on each axle group or single axle in the distance referred to in the table, including the axles between which the distance is measured.