2.

Where, before an authorisation is issued by the national safety authority, the Agency becomes aware or is informed by the applicant through the one-stop shop in accordance with Article 19(6) of Directive (EU) 2016/797 that a project design or specification was changed after the Agency had issued an approval in accordance with Article 19 of Directive (EU) 2016/797 and that there is a risk of a lack of technical and operational compatibility between the ERTMS trackside subsystem and vehicles fitted with ERTMS, it shall cooperate with the parties involved, including the applicant and the relevant national safety authority, in order to find a mutually acceptable solution. If no mutually acceptable solution can be found within 1 month of the beginning of the coordination process, the matter shall be referred to the Board of Appeal for arbitration.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-28 · Text as adopted (Official Journal); later amendments are not incorporated in this text.