(1)The Executive may carry the authorised railways with a double line across and on the level of the highways and access roads specified in Schedule 3 to this Act.
(2)In the exercise of the powers of subsection (1) above, the Executive may alter or interfere with the level of any highway or access road upon which any railway or associated work is to be laid.
(3)Any barriers or other protective equipment specified in an order under the [1983 c. 16.] Level Crossings Act 1983 for the safety or convenience of persons using any crossing authorised by subsection (1) above (in this subsection referred to as “the specified apparatus”) shall, in any case where the specified apparatus is to be provided in, on or under any street or controlled land within the meaning of the Act of 1950, be deemed to be transport works for the purposes of Part II of, and Schedule 4 to, that Act, and accordingly the code in the said Part II shall have effect as if the construction or placing of any of the specified apparatus were specified in section 21 (1) (c) of that Act.