11.—(1) No railway undertaking or international grouping may exercise access or transit rights contained in an agreement with the infrastructure manager concluded pursuant to regulation 9 or 10 unless the undertaking or grouping has produced to the infrastructure manager a safety certificate.
(2) For the purposes of paragraph (1) a safety certificate is any document issued by the Department confirming that the railway undertaking or international grouping satisfies the safety standards required to operate on the Northern Ireland railway network.