http://www.legislation.gov.uk/eudr/2004/54/article/12Directive 2004/54/EC of the European Parliament and of the Council of 29 April 2004 on minimum safety requirements for tunnels in the trans-European road networkDirective 2004/54/EC of the European Parliament and of the CouncilDirective 2004/54/EC of the European Parliament and of the Council of 29 April 2004 on minimum safety requirements for tunnels in the trans-European road network2020-12-12King's Printer of Acts of Parliamenthttps://webarchive.nationalarchives.gov.uk/eu-exit/https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:02004L0054-20090807texttext/xmlen2009-08-07 <Substitution ChangeId="O001001M002" CommentaryRef="c000001" Correction="true">Periodic inspections</Substitution> Article 12 1 The administrative authority shall verify that regular inspections are carried out by the inspection entity to ensure that all tunnels falling within the scope of this Directive comply with its provisions. 2 The period between two consecutive inspections of any given tunnel shall not exceed six years. 3 Where, on the basis of the report of the inspection entity, the administrative authority finds that a tunnel does not comply with the provisions of this Directive, it shall notify the Tunnel Manager and the Safety Officer that measures to increase tunnel safety must be adopted. The administrative authority shall define the conditions for continuing to operate the tunnel or for re-opening the tunnel which will apply until the remedial measures and any further relevant restrictions or conditions are implemented. 4 If the remedial measures include any substantial modification in the tunnel's construction or operation, then once these measures have been taken, the tunnel shall be made the subject of a new authorisation to operate in accordance with the procedure laid down in Annex II. Substituted by Corrigendum to Directive 2004/54/EC of the European Parliament and of the Council of 29 April 2004 on minimum safety requirements for tunnels in the trans-European road network (Official Journal of the European Union L 167 of 30 April 2004).