The following provisions of this Part of this Schedule shall, unless otherwise agreed in writing between the Secretary of State and the Railways Board, have effect for the protection of the Railways Board.

In this Part of this Schedule—

• “the Railways Board” means the British Railways Board;

• “railway property” means any railway of the Railways Board, and any works connected with any such railway for the maintenance or operation of which the Railways Board are responsible, and includes any land held or used by the Railways Board for the purposes of any such railway or works;

• “the existing works” means so much of any of the works authorised by the 1984 Act as is situated upon, across, under or over any railway property or may in any way affect railway property, including—

  1. a

     the bridge constructed under the powers of the [1937 c. cxxvii.] Dartford Tunnel Act 1937 for carrying the road authorised as Work No. 1A by that Act over the North Kent Railway (Southern Region) of the Railways Board; and

  2. b

     the bridge constructed under the powers of the [1957 c. xxxiv.] Dartford Tunnel Act 1957 for carrying the road authorised as Work No. 1 by that Act over the Tilbury Branch Railway (Eastern Region) of the Railways Board;

• “the specified works” means so much of any of the works authorised by this Act as may be situated upon, across, under or over, or within 15 metres of, railway property or may in any way affect railway property;

• “the authorised works” means the existing works and the specified works;

• “construction” includes renewal;

• “maintenance operations” means operations for the maintenance of the authorised works; and

• “plans” includes sections, drawings, particulars and schedules of construction.