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National Transport Commission (Road Transport Legislation – Vehicle Standards) Regulations 2006
162D‑value of a fifth wheel coupling
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162 D‑value of a fifth wheel coupling
In testing a fifth wheel coupling built for a 75 millimetre kingpin used in a B‑double or road train to decide whether its D‑value complies with rule 161(1), the longitudinal movement (after readjusting the jaws of the coupling using a kingpin built to the dimensions mentioned in rule 165(3)(a)) must not be over 4 millimetres.