15Plans, etc., to be approved by Secretary of State
The Company shall in connection with the works from time to time submit for the approval of the Secretary of State plans, sections and other details of their proposals with respect to—
(a)permanent way, tunnels, bridges and viaducts, platforms, stairs, lifts, escalators and other communications;
(b)rolling stock;
(c)lighting;
(d)signalling;
(e)ventilation; and
(f)the power required for traction, with particular reference to the use of overhead contact wires or conductor rail systems;
and any rolling stock and work included in the said proposals shall be constructed and maintained only in accordance with plans, sections and other details as approved by the Secretary of State.