Monday, Jun 10, 2024 at 19:26
Many quote that the GCM is the combined weight of the tug added to the weight of the van. Can anyone please quote where this is written in the legislation. The only definition I can find in legislation is significantly different from that. The only thing I can find comes from the
Vehicle Standard (Australian Design Rule Definitions and Vehicle Categories) 2005 . The definition from that link is pasted below:
GROSS COMBINATION MASS - value specified for the vehicle by the
‘Manufacturer’ as being the maximum of the sum of the ‘Gross Vehicle Mass’ of
the drawing vehicle plus the sum of the ‘Axle Loads’ of any vehicle capable of
being drawn as a trailer.
That means that when you are weighing a rig to ascertain its total weight to see if the rig exceeds the GCM, the weight you must use for the tug in your calculation is its GVM, not the weighbridge weight of the tug with the van coupled.
Unless there is something else in legislation that contradicts the ADR definition, that certainly means that any aftermarket increase to the GVM of a vehicle is going to possible decrease the size of the trailer you can tow.
It also means that for a standard unmodified vehicle, where the combined weight of a maximum loaded tug and a maximum loaded van exceed the GCM, you can not trade off weight in the tug to allow you to tow a van that weighs the maximum specified towing limit for the tug.
FollowupID:
926482