The F1The Secretary of State may make regulations concerning:

1. (a)

   technical updates to the noise certification standards provided for in Article 5(5) and point (a) of Article 9(1), and to the certification procedure provided for in Article 7(1);

2. (b)

   technical updates to the methodology and indicators set out in Annex I.

The purpose of those updates shall be to take into account changes to relevant international rules, as appropriate.