r 157
In forceGeneral coupling requirements
Schedule 6Australian Vehicle Standards Rules
157 General coupling requirements
(1)
A fifth wheel coupling, the mating parts of a coupling, a kingpin or a towbar must not be used for a load more than the manufacturer’s load rating.
(2)
A kingpin must be used only with a fifth wheel coupling that has a corresponding jaw size.
Example
An adaptor must not to be used to fit a kingpin to a fifth wheel coupling.
(3)
The mating parts of a coupling used to connect a semi-trailer to a towing vehicle must not allow the semi-trailer to roll to an extent that makes the towing vehicle unstable.
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