A heavy vehicle is a class 2 heavy vehicle if—
(a) it—
(i) complies with the prescribed mass requirements and prescribed dimension requirements applying to it; and
(ii) is—
(A) a B-double; or
(B) a road train; or
(C) a bus, other than an articulated bus, that is longer than 12.5m; or
(D) a combination designed and built to carry vehicles on more than 1 deck that, together with its load is longer than 19m or higher than 4.3m; or
(E) a motor vehicle, or a combination, that is higher than 4.3m and is built to carry cattle, sheep, pigs or horses; or
(b) it is a PBS vehicle.