Part 6ARestricted access vehicles

Part 6A—Restricted access vehicles 153A—Using restricted access vehicle (1) A person must not use a restricted access vehicle, or permit a restricted access vehicle to be used, on a road unless the road is one on which the vehicle is allowed to be used under a mass or dimension authority applying to the vehicle. restricted access vehicle means a heavy vehicle that (together with its load) is— (a) higher than 4.3m; or (b) wider than 2.5m; or (c) longer than— (i) if a single vehicle other than an articulated bus—12.5m; or (ii) if an articulated bus—18m; or (iii) if a combination—19m; safer freight vehicle means a single heavy motor vehicle that meets the requirements prescribed for the purposes of this definition by the national regulations, but does not include a bus; single heavy motor vehicle means a motor vehicle that, on its own, is a heavy vehicle; specified semitrailer means a semitrailer that— (a) is not a PBS vehicle; and (b) has an air suspension system with effective dampers fitted; and (c) has a deck height not higher than 1.2m for at least 50% of its deck length; and (d) if in a combination—the combination— (i) consists only of— (A) a prime mover towing a single semitrailer attached to the prime mover by a fifth wheel coupling; or (B) a B‑double; or (C) a B‑triple; and (ii) has a mass not more than 90% of the prescribed mass requirements for the combination. Although this section does not apply to certain combinations, a combination that is a class 2 heavy vehicle will still need to have a class 2 heavy vehicle authorisation (see section 137). (3) This section does not apply to— (a) a class 2 heavy vehicle; or (b) a specified PBS vehicle as defined in section 136(2); or All other PBS vehicles are class 2 heavy vehicles (see section 136). (c) a specified semitrailer; or (d) a safer freight vehicle; or (e) a combination that— (i) includes a safer freight vehicle, together with its load, that is the only component vehicle wider than 2.5m; and (ii) is not higher than 4.3m; and (iii) is not longer than 19m.