Section 15 Gauge of railways and restrictions on working
The railways shall be constructed on a gauge of 1,435 millimetres (4 feet 8½ inches) and the motive power to be used shall be electrical energy or such other motive power as the Secretary of State may approve.
No part of the tramway system shall be used for, or in connection with, the conveyance of passengers without the prior written permission of the Secretary of State and the Executive shall comply with the conditions (if any) which the Secretary of State may from time to time prescribe for the safety of persons using the tramway system.
The Executive shall submit for the approval of the Secretary of State details of their proposals for the trams to be used on the tramway system and the trams so used shall be constructed and maintained in accordance with particulars approved by the Secretary of State.
If, without reasonable excuse, the Executive contravene the provisions of subsection (2) or (3) above they shall be guilty of an offence and liable on summary conviction to a fine not exceeding level 3 on the standard scale.
Without prejudice to the generality of subsection (2) above, traction cables of the overhead line equipment of any tramway, and of so much of any authorised railway as is comprised in any level crossing, shall be erected and maintained at a height agreed by the Secretary of State and, if at any place a height of less than 5·63 metres (18 feet 6 inches) above the surface of the ground is so agreed for a cable, the Executive shall, in accordance with section 8 (2) of this Act, erect and maintain such traffic signs as may be directed by the Secretary of State to give warning of the cable.