http://www.legislation.gov.uk/eur/2014/540/article/13/adoptedRegulation (EU) No 540/2014 of the European Parliament and of the Council of 16 April 2014 on the sound level of motor vehicles and of replacement silencing systems, and amending Directive 2007/46/EC and repealing Directive 70/157/EEC (Text with EEA relevance)Regulation (EU) No 540/2014 of the European Parliament and of the CouncilRegulation (EU) No 540/2014 of the European Parliament and of the Council of 16 April 2014 on the sound level of motor vehicles and of replacement silencing systems, and amending Directive 2007/46/EC and repealing Directive 70/157/EEC (Text with EEA relevance)2021-02-17King's Printer of Acts of Parliamenthttps://webarchive.nationalarchives.gov.uk/eu-exit/https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32014R0540texttext/xmlen Transitional provisions Article 13 1 In order to check compliance of the test track as described in point 3.1.1 of Annex II, ISO 10844:1994 may be applied as an alternative to ISO 10844:2011 until 30 June 2019. 2 Vehicles with a serial hybrid drive train, which have a combustion engine with no mechanical coupling to the power train, shall be exempted from the requirements of Article 6 until 30 June 2019.