{
  "url": "https://openlegislation.uk/dark-smoke-permitted-periods-vessels-regulations-1958/introduction",
  "json_url": "https://openlegislation.uk/dark-smoke-permitted-periods-vessels-regulations-1958/introduction.json",
  "legislation": "uksi/1958/878",
  "legislation_title": "The Dark Smoke (Permitted Periods) (Vessels) Regulations, 1958",
  "legislation_url": "https://openlegislation.uk/dark-smoke-permitted-periods-vessels-regulations-1958",
  "path": "introduction",
  "kind": "introduction",
  "number": null,
  "heading": "Introductory text",
  "text": "CLEAN AIR\nMade 22nd May 1958\nLaid before Parliament 29th May 1958\nComing into Operation 1st June 1958\nThe Minister of Housing and Local Government, in exercise of his powers under subsection (2) of section 1 of the Clean Air Act, 1956, and of all other owers enabling him in that behalf, hereby makes the following regulations:—",
  "extent": "E+W+S",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Regulations revoked (E.) (7.1.2015) by The Clean Air (Miscellaneous Provisions) (England) Regulations 2014 (S.I. 2014/3318), reg. 2(1), Sch. 4"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1958/878/introduction",
    "retrieved_at": "2026-10-30T01:02:13.281240+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."
}