63.—(1) Not less than 28 days before commencing the specified works, Network Rail must submit to the operator proper and sufficient plans of the specified works for the approval of the engineer.
(2) Network Rail must not commence the specified works until the plans of the specified works submitted under sub-paragraph (1) are—
(a)approved in writing by the engineer;
(b)deemed to have been approved by the engineer pursuant to sub-paragraph (3) below; or
(c)settled by arbitration.
(3) The approval of the engineer under sub-paragraph (1) must not be unreasonably withheld, and if by the end of the period of 28 days beginning with the date on which such plans were provided to the operator the engineer has not notified Network Rail of their disapproval of those plans and the grounds of their disapproval the engineer Network Rail may serve upon the engineer written notice requiring the engineer to intimate approval or disapproval within a further period of 14 days beginning with the date upon which the engineer receives written notice from Network Rail. If by the expiry of the further 14 days the engineer has not intimated approval or disapproval, the engineer will be deemed to have approved the plans as submitted.
(4) When signifying approval of the plans the engineer may specify any protective works (whether temporary or permanent) which in the engineer’s reasonable opinion should be carried out before the commencement of the specified works to ensure the safety or stability of guided busway property or the continuation of safe and efficient operation of any guided busway belonging to the operator (including any relocation or removal of works, apparatus and equipment necessitated by the specified works, or for the comfort and safety of passengers who may be affected by the specified works), and any such protective works as may be reasonably necessary for those purposes must be constructed by the operator or by Network Rail, at the election of the operator, in accordance with paragraphs 64 to 66 and such protective works must be carried out at the expense of Network Rail in either case without unnecessary delay. Network Rail must not commence the construction of the specified works until the engineer has notified Network Rail that the protective works have been completed to their reasonable satisfaction.
(5) The engineer must inspect the protective works and notify Network Rail that the protective works have been completed to their reasonable satisfaction or otherwise, as soon as reasonably practicable after the protective works have been completed.