In the 1981 Act the following section is inserted after section 65—
(1)If each of the conditions in subsection (2) is satisfied, an inspector may stop, detain and inspect any vehicle to ascertain whether the provisions of any of the following are being complied with—
(a)this Act;
(b)an order made under this Act;
(c)a regulation of a local authority made in pursuance of such an order.
(2)The conditions are—
(a)that the vehicle is in a designated area in a designated period;
(b)that the inspector is accompanied by a constable in uniform.
(3)In subsection (2) “designated” means designated by an order made by the Secretary of State.
(4)A vehicle includes—
(a)a trailer, semi-trailer or other thing which is designed or adapted to be towed by another vehicle;
(b)anything on a vehicle;
(c)a detachable part of a vehicle;
(d)a container or other structure designed or adapted to be carried by or on a vehicle.”