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Heavy Vehicle (Vehicle Standards) National Regulation
sch.3-sec.23Mounting of fifth wheel couplings on B-doubles and road trains
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sch.3-sec.23 Mounting of fifth wheel couplings on B-doubles and road trains
A fifth wheel coupling must be mounted on a prime mover, or a semitrailer used in a B-double or road train, in accordance with AS 1771-1987 ‘Installation of Fifth Wheel and Turntable Assemblies’.