# Commission Implementing Decision (EU) 2019/1119 of 28 June 2019 on the approval of efficient vehicle exterior lighting using light emitting diodes for use in internal combustion engine vehicles and non-externally chargeable hybrid electrified vehicles as an innovative technology for reducing CO2 emissions from passenger cars pursuant to Regulation (EC) No 443/2009 of the European Parliament and of the Council (Text with EEA relevance), Division: Formula 8

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

s K CO 2 – = s K CO 2 T = ∑ T t = 1 K CO 2 t − K CO 2 – 2 T T − 1 Where:
T Number of measurements performed by the manufacturer for the extrapolation of the K CO 2 as defined in paragraph 2.2 of Appendix 2 to Sub-Annex 8 to Annex XXI to Regulation (EU) 2017/1151.
K CO 2 – mean of the T values of K CO 2 t
Where the standard deviation of the power consumption of each efficient exterior LED light ( s P EI i – ) and the standard deviation of the k CO 2 s k CO 2 – lead to an error in the CO2 savings ( s C CO 2 ), that error shall be calculated by means of Formula 9.

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Source: https://www.legislation.gov.uk/eudn/2019/1119/annex/division/4/division/4.2/division/4.2.2/division/2 (the official version)
Page: https://openlegislation.uk/eu-decision-2019-1119/annex/division-4/division-4.2/division-4.2.2/division-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.