3Meaning of caravan
(1) For the purposes of article 2 “caravan” 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 so designed or adapted 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) a structure of the description specified in paragraph (2)(a) and (b) any of whose dimensions, when the structure is assembled, exceed a limit specified in paragraph (3).
(2) A structure designed or adapted for human habitation which—
(a) is composed of not more than two 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 excluded from being a caravan for the purposes of article 2 by reason only that it cannot lawfully be so moved on a highway when assembled.
(3) The limits are—
(a) length (exclusive of any drawbar): 18.288 metres (60 feet);
(b) width: 6.096 metres (20 feet);
(c) overall height of living accommodation (measured internally from the floor at the lowest level to the ceiling at the highest level): 3.048 metres (10 feet).
Specified date: 24 August 2006: see art 1(1).