Vehicle and Traffic (Vehicle Standards) Regulations 2024
135General coupling requirements
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135 General coupling requirements
(1) A fifth-wheel coupling, the mating parts of a coupling, a kingpin or towbar must not be used in a light combination for a load more than the manufacturer's load rating.
(2) A kingpin in a light combination must be used only with a fifth-wheel coupling that has a corresponding jaw size.
| Example: | An adaptor must not be used to fit a kingpin to a fifth-wheel coupling. |
(3) The mating parts of a coupling used to connect a light semi-trailer to a towing vehicle must not allow the semi-trailer to roll to an extent that makes the towing vehicle unstable.