Where a structural subsystem was authorised to be placed in service on the rail system in accordance with regulation 7 or regulation 9 as they had effect before IP completion day and that authorisation has not been revoked, it is treated as authorised under these Regulations as they have effect on or after IP completion day.

Where an application for authorisation was made pursuant to regulation 5 as it had effect before IP completion day and that authorisation was not issued before IP completion day, it is, on or after IP completion day, treated as a valid application under these Regulations and any EC declaration of verification and technical file submitted with that application are treated as a UK declaration of verification and technical file submitted in accordance with these Regulations as they have effect on or after IP completion day.

Where an application for type authorisation was made pursuant to regulation 9 as it had effect before IP completion day and that authorisation was not issued before IP completion day, it is, on or after IP completion day, treated as a valid application under these Regulations and any reference to an applicable TSI or notified national technical rule in the documentation accompanying that application is treated as a reference to the applicable NTSN or NTR which replaces them.

Where a Competent Authority has made a decision about the requirement for authorisation and the extent to which TSIs must apply to a project subsystem pursuant to regulation 13(8) before IP completion day, a reference to a TSI in that decision is treated as a reference to the NTSN that replaces it.

Where an application for a decision by the Competent Authority as to whether an authorisation is required was made pursuant to regulation 13 as it had effect before IP completion day and the Competent Authority has not made the decision before IP completion day, it is treated as an application under regulation 13 as it has effect on or after IP completion day, and any reference in that application to TSIs or parts of TSIs is treated as a reference to the NTSNs or parts of NTSNs that replace them.

A derogation granted against a TSI by the Competent Authority in accordance with Article 9 of the Directive and these Regulations as they had effect before IP completion day is treated on or after IP completion day as an exemption granted by the Competent Authority against the NTSN which replaces that TSI in accordance with regulations 14 and 14A.

Except for a project subsystem authorised under regulation 9, if a project subsystem was authorised before IP completion day, the project entity must (in addition to the requirements of regulation 19(2)) keep the documents it was required to retain in accordance with regulation 19(1)(a) as it had effect before IP completion day.

Where an interoperability constituent was placed on the market anywhere in the European Union before IP completion day, it is treated on or after IP completion day as an interoperability constituent placed on the UK market in accordance with Part 3.

Where a notified body (as defined in regulation 30(2)) was engaged before IP completion day to carry out an EC verification assessment procedure in relation to TSIs or notified national technical rules pursuant to Annex VI of the Directive and regulation 16 as it had effect before IP completion day, the work carried out by that body before IP completion day is treated as work undertaken pursuant to regulation 16 and Schedule 4 as they have effect from IP completion day to carry out the UK verification assessment procedure in relation to NTSNs.

Where a designated body was engaged before IP completion day to carry out an EC verification assessment procedure in relation to TSIs or notified national technical rules pursuant to Annex VI of the Directive and regulation 16 as it had effect before IP completion day, the work carried out by that body before IP completion day is treated as work undertaken pursuant to regulation 16 and Schedule 4 as they have effect from IP completion day to carry out the UK verification assessment procedure in relation to UK specific rules.

A dispensation from a notified national technical rule granted by the Competent Authority pursuant to regulation 46 as it had effect before IP completion day, is treated on or after IP completion day as a dispensation from the NTR specified as replacing it.