6.

If, during supervision, a national safety authority identifies a serious safety risk, it may at any time apply temporary safety measures, including immediately restricting or suspending the relevant operations. If the single safety certificate was issued by the Agency, the national safety authority shall immediately inform the Agency thereof and provide supporting evidence for its decision. If the Agency finds that the holder of a single safety certificate no longer satisfies the conditions for certification, it shall immediately restrict or revoke that certificate. If the Agency finds that the measures applied by the national safety authority are disproportionate, it may ask the national safety authority to withdraw or adapt those measures. The Agency and the national safety authority shall cooperate with a view to reaching a mutually acceptable solution. Where necessary, this process shall also involve the railway undertaking. If the latter procedure fails, the decision of the national safety authority to apply temporary measures shall remain in force. The decision of the national safety authority relating to temporary safety measures shall be subject to national judicial review as referred to in Article 18(3). In such a case, the temporary safety measures may apply until the end of the judicial review, without prejudice to paragraph 5. If the duration of a temporary measure is longer than 3 months, the national safety authority shall ask the Agency to restrict or revoke the single safety certificate and the procedure set out in paragraph 5 shall apply.

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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.