{
  "url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/6a/division/division-3./division-3.4./division-3.4.1.",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/6a/division/division-3./division-3.4./division-3.4.1..json",
  "legislation": "eur/2017/1151",
  "legislation_title": "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)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-1151",
  "path": "annex/Sub/6a/division/division/3./division/3.4./division/3.4.1.",
  "kind": "division",
  "number": "3.4.1",
  "heading": null,
  "text": "Road load and dynamometer settings shall be as specified in Sub-Annex 4, including the requirement for the room temperature to be at 23 °C.\nTo take account of the difference in air density at 14 °C when compared to the air density at 20 °C, the chassis dynamometer shall be set as specified in paragraphs 7. and 8. of Sub-Annex 4 with the exception that f2_TReg from the following equation shall be used as the target coefficient Ct.\nf2_TReg = f2 × (Tref + 273)/(Treg + 273)\nwhere:\nf2is the second order road load coefficient, at reference conditions, N/(km/h)2;\nTrefis the road load reference temperature as specified in paragraph 3.2.10. of this Annex, C;\nTregis the regional temperature, as defined in paragraph 3.1.1., C.\nIn the case that a valid chassis dynamometer setting of the 23 °C test is available, the second order chassis dynamometer coefficient of Cd shall be adapted in accordance with the following equation:\nCd_Treg = Cd + (f2_TReg – f2)",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Regulation (EU) 2018/1832 of 5 November 2018 amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) 2017/1151 for the purpose of improving the emission type approval tests and procedures for light passenger and commercial vehicles, including those for in-service conformity and real-driving emissions and introducing devices for monitoring the consumption of fuel and electric energy (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/6a/division/division/3./division/3.4./division/3.4.1.",
    "retrieved_at": "2026-11-01T14:44:48.753743+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}