Approval must state particular conditions for design for vehicle fitted with quad-axle group
11 Approval must state particular conditions for design for vehicle fitted with quad-axle group
This section applies to a PBS design approval if the design to which the approval relates is for a type of heavy vehicle fitted with a quad-axle group.
The approval must state that any PBS vehicle approval given for a heavy vehicle built to the design that allows a mass of more than 20t on the quad-axle group is subject to the following conditions—
the quad-axle group must be fitted with a certified road-friendly suspension system;
all axles in the quad-axle group must be fitted with dual tyres;
the axles in the quad-axle group must relate to each other through a load-sharing suspension system within the meaning given by section 33(2) of Schedule 2 of the Heavy Vehicle (Vehicle Standards) National Regulation;
if the quad-axle group is fitted with a retractable axle, the retractable axle must comply with ADR 43/04;
the quad-axle group must be fitted with either—
a steerable axle with no less than 12º steering articulation and an effective automatic centering mechanism; or
another steering mechanism proven to be effective in mitigating the impacts of road scrubbing by tyres;
the operator of the vehicle must have mass alternative compliance accreditation.
In this section—
certified road-friendly suspension system has the meaning given by section 3 of the Heavy Vehicle (Mass, Dimension and Loading) National Regulation.
mass alternative compliance accreditation has the meaning given by section 3 of the Heavy Vehicle (Mass, Dimension and Loading) National Regulation.
steerable axle means a single axle that connects the wheels of a vehicle to a steering mechanism for the vehicle.
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