S T A T U T O R Y I N S T R U M E N T S 2021 No. 552  EXITING THE EUROPEAN UNION  HIGHWAYS  TUNNELS  The Road Tunnel Safety (Amendment) Regulations 2021  Sift requirements satisfied 23th March 2021  Made - - - - at 8.48 a.m. on 6th May 2021  Laid before Parliament at 1.00 p.m. on 6th May 2021  Coming into force - - 28th May 2021  The Secretary of State makes the following Regulations in exercise of the powers conferred by  section 8(1) of, and paragraph 21 of Schedule 7 to, the European Union (Withdrawal) Act  2018( a ).  The requirements of paragraph 3(2) of Schedule 7 to that Act (relating to the appropriate  Parliamentary procedure for these Regulations) have been satisfied.  1.  These Regulations may be cited as the Road Tunnel Safety (Amendment) Regulations 2021  and come into force on the 22nd day after the day on which they are laid.  2.  The Road Tunnel Safety Regulations 2007( b ) are amended as follows. 3.  In regulation 2 (interpretation etc.), in paragraph (2), after “as set out in the Road Tunnel  Directive” insert “and modified by regulation 2A”.  4.  In regulation 2 (interpretation etc.), in paragraph (3)—  Citation and commencement  Amendment of the Road Tunnel Safety Regulations 2007  (a) after the definition of “modification” insert—  ““national authority” means in relation to—  (i) England, the Secretary of State;  (ii) Wales, the Welsh Ministers;  (iii) Scotland, the Scottish Ministers;  ( a ) 2018 c. 16; section 8 was amended by section 27 of the European Union (Withdrawal Agreement) Act 2020 (c. 1).  ( b ) S.I. 2007/1520, amended by S.I. 2009/64. 