The Commission shall adopt delegated acts in accordance with Article 12 supplementing this Regulation by laying down detailed rules concerning the specific test procedures and technical requirements for:(a) the type-approval of vehicles with regard to the advanced vehicle systems listed in Paragraph 1;(b) the type-approval of the advanced vehicle systems listed in Points (a), (f) and (g) of Paragraph 1 as separate technical units.Those delegated acts shall be published at least 15 months before the applicable dates specified in Annex II.