{
  "url": "https://openlegislation.uk/environmental-noise-wales-regulations-2006/regulation-4",
  "json_url": "https://openlegislation.uk/environmental-noise-wales-regulations-2006/regulation-4.json",
  "legislation": "wsi/2006/2629",
  "legislation_title": "The Environmental Noise (Wales) Regulations 2006",
  "legislation_url": "https://openlegislation.uk/environmental-noise-wales-regulations-2006",
  "path": "regulation/4",
  "kind": "regulation",
  "number": "4",
  "heading": "Strategic noise maps: general requirements",
  "text": "(1) Any strategic noise map made or revised under this Part must satisfy the applicable requirements in Schedule 1.\n(2) A competent authority under regulation 6 or 10 must apply—\n(a) the noise indicators Lden and Lnight in accordance with Annex I of the Directive; and\n(b) the supplementary noise indicators in all cases listed as examples in paragraph 3 of Annex I of the Directive,\nwhen making or revising strategic noise maps under this Part.\n(3) The values of Lden, Lnight and the supplementary noise indicators must be determined by computation (at the assessment position) and by means of the assessment methods set out in Annex II to the Directive.\n(3A) In paragraph (3), “assessment position” means the assessment height in paragraph 7 of Annex IV to the Directive.\n(4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n(5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\n(6) “Supplementary noise indicator” means a noise indicator as defined in Schedule 3.\n(7) For the purposes of paragraph (2)(a), a reference to Annex I to the Directive is to be read as if, in paragraph 1, in the fourth indent that begins “the day is 12 hours”, the words from “The Member States” to the end were omitted.",
  "extent": "E+W",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Words in reg. 4(3) substituted (31.12.2018) by The Environmental Noise (Wales) (Amendment) Regulations 2018 (S.I. 2018/1208), regs. 1(2), 2(3)(a)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Reg. 4(3A) inserted (31.12.2018) by The Environmental Noise (Wales) (Amendment) Regulations 2018 (S.I. 2018/1208), regs. 1(2), 2(3)(b)"
    },
    {
      "type": "F",
      "label": "F3",
      "text": "Reg. 4(4)(5) omitted (31.12.2018) by virtue of The Environmental Noise (Wales) (Amendment) Regulations 2018 (S.I. 2018/1208), regs. 1(2), 2(3)(c)"
    },
    {
      "type": "F",
      "label": "F4",
      "text": "Reg. 4(7) inserted (31.12.2020) by The Environmental Noise (Wales) (Amendment) (EU Exit) Regulations 2019 (S.I. 2019/247), regs. 1, 2(3); 2020 c. 1, Sch. 5 para. 1(1)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/wsi/2006/2629/regulation/4",
    "retrieved_at": "2026-10-29T00:03:02.067632+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."
}