On 7 January 2021, the tripartite agreement between the national safety authorities of the UK, France and the Channel Tunnel Intergovernmental Commission, on cooperation in the field of safety and interoperability of railway activities was signed.

It explains the arrangements for cooperation between the authorities in the issue of railway authorisations; for the management of the Channel Tunnel infrastructure; and the operation of cross-Channel rail services.

Tripartite co-operation agreement

Agreement between the National Safety Authorities

Appendix I: Cross border section definition

Appendix II: Vehicle and vehicle type authorisation

Appendix III: Safety certificates

Appendix IV: Safety authorisation

Appendix V: Supervision

Appendix VI: Authorisation for the placing in service of fixed installations