(4)As set out in Article 7(5) of Section 2 of Part A of Annex 31 to the Trade and Cooperation Agreement, the Specialised Committee on Road Transport is to set the technical and procedural specifications of the use of IMI by the United Kingdom. Those specifications are necessary in order to allow the connection of operators and competent authorities to IMI, and thereby allow the operators to submit their posting declarations and competent authorities to take part in the administrative cooperation described in recitals 1 and 2. The Union has implemented those specifications by means of Commission Implementing Regulation (EU) 2021/2179note.