52.—(1) Regulations may make provision for the purpose of enabling any company or other body corporate which has one or more subsidiaries to hold an operator’s licence under which the vehicles authorised to be used consist of or include vehicles belonging to or in the possession of any of its subsidiaries.
(2) Regulations under this section may modify or supplement any of the provisions of this Act, so far as appears to the Department to be necessary or expedient for or in connection with the purpose mentioned in subsection (1).
53. Regulations may provide for this Act to apply in relation to partnerships with such modifications as may be prescribed.
54. The provisions of this Act apply to vehicles and persons in the service of the Crown as they apply to other vehicles and persons.
55. A road vested in or under the control of—
(a)the Belfast Harbour Commissioners, or
(b)any other harbour authority having in relation to their harbour area powers similar to those of the Belfast Harbour Commissioners for restricting access to, and regulating motor traffic on, roads,
shall be treated for the purposes of this Act as a road to which the public has access.