{
  "url": "https://openlegislation.uk/eu-regulation-2008-692/annex-IV/appendix-2",
  "json_url": "https://openlegislation.uk/eu-regulation-2008-692/annex-IV/appendix-2.json",
  "legislation": "eur/2008/692",
  "legislation_title": "Commission Regulation (EC) No 692/2008 of 18 July 2008 implementing and amending 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 (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2008-692",
  "path": "annex/IV/appendix/2",
  "kind": "appendix",
  "number": "2",
  "heading": "MEASUREMENT OF SMOKE OPACITY",
  "text": "1.\nINTRODUCTION\n1.1.\nThis Appendix describes the requirements for measuring the opacity of exhaust emissions.\n2.\nSYMBOL OF THE CORRECTED ABSORPTION COEFFICIENT\n2.1.\nA symbol of the corrected absorption coefficient shall be affixed to every vehicle conforming to a vehicle type to which this test applies. The symbol shall be a rectangle surrounding a figure expressing in m–1 the corrected absorption coefficient obtained, at the time of approval, from the test under free acceleration. The test method is described in section 4.\n2.2.\nThe symbol shall be clearly legible and indelible. It shall be fixed in a conspicuous and readily accessible place, the location of which shall be specified in the Addendum to the type-approval certificate shown in Appendix 4 to Annex I.\n2.3.\nFigure IV.2.1 gives an example of the symbol.\nFigure IV.2.1\nThe above symbol shows that the corrected absorption coefficient is 1,30 m–1.\n3.\nSPECIFICATIONS AND TESTS\n3.1.\nThe specifications and tests shall be those set out in Part III, section 24, of UN/ECE Regulation No 24, with the exception to these procedures set out in section 3.2.\n3.2.\nThe reference to Annex 2 in paragraph 24.1 of UN/ECE Regulation No 24 shall be understood as a reference to Appendix 2 to Annex X to this Regulation.\n4.\nTECHNICAL REQUIREMENTS\n4.1.\nThe technical requirements shall be those set out in Annexes 4, 5, 7, 8, 9 and 10 to UN/ECE Regulation No 24, with the exceptions set out in sections 4.2., 4.3 and 4.4.\n4.2.\nTest at steady speeds over the full load curve\n4.2.1.\nThe references to Annex 1 in paragraph 3.1. of Annex 4 of UN/ECE Regulation No 24 shall be understood as references to Appendix 3 to Annex I to this Regulation.\n4.2.2.\nThe reference fuel specified in paragraph 3.2 of Annex 4 of UN/ECE Regulation No 24 shall be understood as reference to the reference fuel in Annex IX to this Regulation appropriate to the emission limits against which the vehicle is being type approved.\n4.3.\nTest under free acceleration\n4.3.1.\nThe references to Table 2, Annex 2 in paragraph 2.2 of Annex 5 to UN/ECE Regulation No 24 shall be understood as references to the table under point 2.4.2.1 of Appendix 4 to Annex I to this Regulation.\n4.3.2.\nThe references to paragraph 7.3 of Annex 1 in paragraph 2.3 of Annex 5 to UN/ECE Regulation No 24 shall be understood as references to Appendix 3 to Annex I to this Regulation.\n4.4.\n‘ECE’ method of measuring the net power of C.I. engines\n4.4.1.\nThe references in paragraph 7 of Annex 10 to UN/ECE Regulation No 24 to the ‘Appendix to this Annex’ and in paragraphs 7 and 8 of Annex 10 to UN/ECE Regulation No 24 to ‘Annex 1’ shall be understood as references to Appendix 3 to Annex I to this Regulation.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2008/692/annex/IV/appendix/2",
    "retrieved_at": "2026-11-01T14:52:09.943760+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."
}