In the case of tunnels which are already open to public traffic by 30 April 2006 , the administrative authority shall have until 30 October 2006 to assess their compliance with the requirements of this Directive, with specific reference to the safety documentation provided for in Annex II and on the basis of an inspection.

The Tunnel Manager shall, if necessary, propose to the administrative authority a plan for adapting the tunnel to the provisions of this Directive and the remedial measures he intends to put in place.

The administrative authority shall give its approval to the remedial measures or ask for them to be modified.

Thereafter, if the remedial measures include any substantial modification in the construction or operation, then once these measures have been taken, the procedure laid down in Annex II shall be implemented.

Member States shall by 30 April 2007 submit a report to the Commission on how they plan to meet the requirements of this Directive, on planned measures, and, where appropriate, on the consequences of opening or closing the main access roads to the tunnels. In order to minimise disturbances to traffic at European level, the Commission may comment on the timetable of the work intended to ensure that tunnels comply with the requirements of this Directive.

The refurbishment of tunnels shall be carried out according to a schedule and shall be finished by 30 April 2014 .

Where the total tube length of existing tunnels divided by the total length of the part of the trans-European road network located on their territory exceeds the European average, Members States may extend the period stipulated in paragraph 6 by five years.