# 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 3.2: Determination of engine speeds


For any vj < 1 km/h, it shall be assumed that the vehicle is standing still and the engine speed shall be set to nidle. The gear lever shall be placed in neutral with the clutch engaged except 1 second before beginning an acceleration from standstill where first gear shall be selected with the clutch disengaged.
For each vj ≥ 1 km/h of the cycle trace and each gear i, i = 1 to ngmax, the engine speed, ni,j, shall be calculated using the following equation:
ni,j = (n/v)i × vj
The calculation shall be performed with floating point numbers, the results shall not be rounded.

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Source: https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/2/division/division/3./division/3.2. (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/2/division/division-3./division-3.2.
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.