# Commission Regulation (EU) 2017/2400 of 12 December 2017 implementing Regulation (EC) No 595/2009 of the European Parliament and of the Council as regards the determination of the CO2 emissions and fuel consumption of heavy-duty vehicles and amending Directive 2007/46/EC of the European Parliament and of the Council and Commission Regulation (EU) No 582/2011 (Text with EEA relevance), Division 3.3.10

Extent: E+W+S+N.I.

If the vehicle is equipped with an active aero device it has to be demonstrated to the approval authority that
i.. The device is always activated and effective to reduce the air drag at vehicle speed over 60 km/h
ii.. The device is installed and effective in a similar manner on all vehicles of the family.
If i. and ii. are not applicable the active aero device has to be fully deactivated during the constant speed test.

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Source: https://www.legislation.gov.uk/eur/2017/2400/annex/VIII/division/3/division/3.3/division/3.3.10 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-2400/annex-VIII/division-3/division-3.3/division-3.3.10
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.