Article 18
1. In accordance with Article 16, quality standards for intra-Community cross-border services are laid down in the Annex. 2. Where exceptional situations relating to infrastructure or geography so require, the national regulatory authorities may determine exemptions from the quality standards provided for in the Annex. Where national regulatory authorities determine exemptions in this manner, they shall notify the Commission forthwith. The Commission shall submit an annual report of the notifications received during the previous 12 months to the Committee established under Article 21 for its information. 3. The Commission shall publish in the Official Journal of the European Communities any adjustments made to the quality standards for intra-Community cross-border services and shall take steps to ensure the regular independent monitoring and the publication of performance levels certifying compliance with these standards and the progress accomplished. National regulatory authorities shall ensure that corrective action is taken where necessary.