Regulation 3
Subject to regulation 4 below, no person shall supply, offer to supply, agree to supply, expose for supply or possess for supply any vehicle with three wheels which is propelled by an internal combustion engine and is designed or constructed primarily for use in leisure activities (including competitive racing) on either
(a)
all types of land surface; or
(b)
all types of land surface other than any highway or any other road, or bridge over which a road passes, to which the public has access,
and not primarily for agricultural or forestry purposes.