Transport Operations (Road Use Management—Vehicle Standards and Safety) Regulation 2021
sch.1-sec.145General coupling requirements
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sch.1-sec.145 General coupling requirements
A fifth wheel coupling, the mating parts of a coupling, a kingpin or a towbar must not be used for a load on a vehicle that is more than the manufacturer’s load rating for the coupling, mating parts, kingpin or towbar. A kingpin must be used only with a fifth wheel coupling that has a corresponding jaw size. An adaptor must not to be used to fit a kingpin to a fifth wheel coupling. The mating parts of a coupling used to connect a semitrailer to a towing vehicle must not allow the semitrailer to roll to an extent that makes the vehicle unstable. (sch.1-sec.145-ssec.1) A fifth wheel coupling, the mating parts of a coupling, a kingpin or a towbar must not be used for a load on a vehicle that is more than the manufacturer’s load rating for the coupling, mating parts, kingpin or towbar. (sch.1-sec.145-ssec.2) A kingpin must be used only with a fifth wheel coupling that has a corresponding jaw size. An adaptor must not to be used to fit a kingpin to a fifth wheel coupling. (sch.1-sec.145-ssec.3) The mating parts of a coupling used to connect a semitrailer to a towing vehicle must not allow the semitrailer to roll to an extent that makes the vehicle unstable.