(1)In this Act “mobile home” means any structure designed or adapted for human habitation which is capable of being moved from one place to another (whether by being towed, or by being transported on a motor vehicle or trailer) and any motor vehicle designed or adapted for human habitation, but does not include—
(a)any railway rolling stock which is for the time being on rails forming part of a railway system, or
(b)any tent.
(2)A structure designed or adapted for human habitation which—
(a)is composed of not more than 2 sections separately constructed and designed to be assembled on a site by means of bolts, clamps or other devices, and
(b)is, when assembled, physically capable of being moved by road from one place to another (whether by being towed, or by being transported on a motor vehicle or trailer),
is not to be regarded as not being (or as not having been) a mobile home for the purposes of this Act by reason only that it cannot lawfully be moved on a highway when assembled.
(3)For the purposes of this Act “mobile home” does not include a structure designed or adapted for human habitation which falls within subsection (2)(a) and (b) if its dimensions when assembled exceed any of the following limits, namely—
(a)length (exclusive of any drawbar): 20 metres,
(b)width: 6.8 metres, and
(c)overall height of living accommodation (measured internally from the floor at the lowest level to the ceiling at the highest level): 3.05 metres.
(4)The Welsh Ministers may by order substitute for any figure mentioned in subsection (3) such other figure as may be specified in the order.