Determining whether motor vehicles are class HC motor vehicles—number of trailers
400 Determining whether motor vehicles are class HC motor vehicles—number of trailers
For this regulation, in determining whether a motor vehicle is a class HC motor vehicle—
a converter dolly and a semitrailer, when used together, are taken to be a single trailer; and
a low loader and a low loader dolly, when used together, are taken to be a single trailer.
In this section—
converter dolly means a trailer with a fifth wheel coupling designed to support a semitrailer for hauling purposes.
fifth wheel coupling means a device, other than the upper rotating element and the kingpin (that are parts of a semitrailer), used with a prime mover, semitrailer or a converter dolly to permit quick coupling and uncoupling and to provide for articulation.
low loader means a gooseneck semitrailer with a loading deck 1m or less above the ground.
low loader dolly means a trailer that—
is of the type usually coupled between a prime mover and a low loader; and
consists of a gooseneck rigid frame; and
does not carry any load directly on itself; and
is equipped with 1 or more axles, a kingpin and a fifth wheel coupling.
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