{
  "url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/4/division/division-4./division-4.2./division-4.2.3.",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/4/division/division-4./division-4.2./division-4.2.3..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/4/division/division/4./division/4.2./division/4.2.3.",
  "kind": "division",
  "number": "4.2.3",
  "heading": "Instrumentation",
  "text": "Any instruments shall be installed in such a manner as to minimise their effects on the aerodynamic characteristics of the vehicle.\nIf the effect of the installed instrument on (CD × Af) is expected to be greater than 0,015 m2, the vehicle with and without the instrument shall be measured in a wind tunnel fulfilling the criterion in paragraph 3.2. of this Sub-Annex. The corresponding difference shall be subtracted from f2. At the request of the manufacturer, and with approval of the approval authority, the determined value may be used for similar vehicles where the influence of the equipment is expected to be the same.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/4/division/division/4./division/4.2./division/4.2.3.",
    "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."
}