{
  "url": "https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2002/regulation-55",
  "json_url": "https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2002/regulation-55.json",
  "legislation": "uksi/2002/3113",
  "legislation_title": "The Traffic Signs Regulations and General Directions 2002",
  "legislation_url": "https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2002",
  "path": "regulation/55",
  "kind": "regulation",
  "number": "55",
  "heading": "Warning lights",
  "text": "(1) A lamp for indicating to traffic the limits of a temporary obstruction of the road (a “warning light”) shall comply with the requirements in paragraphs (2), (3), (4), (5) and (6).\n(2) The height of the centre of each lens of the warning light from the surface of the road in the immediate vicinity of the lamp shall not exceed 1500 millimetres where the speed limit on the road is 40 mph or less, or 1200 millimetres where the speed limit on the road is more than 40 mph.\n(3) The warning light—\n(a) shall be powered separately from any other object or device; and\n(b) shall show a steady or intermittent amber light.\n(4) Subject to paragraphs (5) and (6), the whole of the warning light shall conform—\n(a) to British Standard BS EN 12352:2006 incorporating corrigenda July 2008 and July 2009; or\n(b) to a corresponding EEA Standard.\n(5) In relation to each aspect of performance specified in column (2) of an item in the Table, the warning light shall comply with—\n(a) the requirement or test specification of British Standard BS EN 12352:2006 incorporating corrigenda July 2008 and July 2009 specified in column (3) of the item; or\n(b) an equivalent requirement or test specification specified in a corresponding EEA Standard.\nTable\n(1)\nItem\n(2)\nAspect of performance\n(3)\nRequirement or test specification and class\nNOTE 1: A light flashing at a rate of 900 flashes per minute or more shall be deemed to comply with class F1.\nNOTE 2: A light manufactured before 1st January 2011 and having a flash rate of not less than 75 nor more than 150 flashes per minute shall be deemed to comply with the requirements of item 6 until and including 31st December 2015.\n1.\nArea, angle and luminous intensity\nClass L1 or L3 in Table 1\n2.\nLight emitting surface\nFor class L1 lights: paragraph 4.1.2.1\nFor class L3 lights: class P1\n3.\nColorimetric performance of light emitted\nClass C yellow 1 in Table 2\n4.\nRetro-reflective device\nClass R2\n5.\nAutomatic photosensitive switching\nClass A1\n6.\nContinuity of emitted light\nClass F1 (steady) or class F2 (but see NOTE 1 and NOTE 2)\n7.\nOn-time (flashing lights)\nClass O2\n8.\nMechanical strength\nClass M4\n(6) The external surface of the parts of the warning light which are not the lenses and are visible to road users shall be of a colour having the colorimetric values—\n(a) of reference 355 Lemon, or reference 356 Golden yellow, in Table 1 (standard colours) of British Standard BS 381C : 1996; or\n(b) of an equivalent reference specified in a corresponding EEA Standard.",
  "extent": "E+W+S",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Pt. 1 revoked (22.4.2016) by The Traffic Signs Regulations and General Directions 2016 (S.I. 2016/362), reg. 1(1)(b), Sch. 19 Pt. 1 (with regs. 4, 14, 15)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Reg. 55 substituted (30.1.2012) by The Traffic Signs (Amendment) (No. 2) Regulations and General Directions 2011 (S.I. 2011/3041), regs. 1(1)(c), 27 (with regs. 35, 36)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2002/3113/regulation/55",
    "retrieved_at": "2026-10-29T06:35:51.675498+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."
}