Western Australian Consolidated Regulations

ROAD TRAFFIC (VEHICLE STANDARDS) RULES 2002 - REG 59

59 .         Relation between axles in axle group

        (1)         The axles in an axle group, except a twinsteer axle group, fitted to a vehicle with a GVM over 4.5   t must relate to each other through a load-sharing suspension system.

        (2)         In this rule —

        load-sharing suspension system means an axle group suspension system that —

            (a)         is built to divide the load between the tyres on the group so that no tyre carries a mass over 10% more than the mass that it would carry if the load were divided equally; and

            (b)         has effective damping characteristics on all axles of the group.