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.