# Commission Regulation (EU) 2017/1151 of 1 June 2017 supplementing Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information, amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) No 1230/2012 and repealing Commission Regulation (EC) No 692/2008 (Text with EEA relevance), Division 2.1.1: Final Conformity Factors


The conformity factor CFpollutant for the respective pollutant is specified as follows:
CO emissions shall be measured and recorded at RDE tests.
margin is a parameter taking into account the additional measurement uncertainties introduced by the PEMS equipment, which are subject to an annual review and shall be revised as a result of the improved quality of the PEMS procedure or technical progress.
‘margin PN’ is a parameter taking into account the additional measurement uncertainties introduced by the PEMS PN equipment, which are subject to an annual review and shall be revised as a result of the improved quality of the PEMS PN procedure or technical progress.
Pollutant
Mass of oxides of nitrogen (NOx)
Number of particles (PN)
Mass of carbon monoxide (CO)
Mass of total hydrocarbons (THC)
Combined mass of total hydrocarbons and oxides of nitrogen (THC + NOx)
CFpollutant
1 + margin NO x with margin NO x = 0,43
1 + margin PN with margin PN = 0,5
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Source: https://www.legislation.gov.uk/eur/2017/1151/annex/IIIA/division/2/division/2.1/division/2.1.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-1151/annex-IIIA/division-2/division-2.1/division-2.1.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.