{
  "url": "https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2016/schedule-14/paragraph-46",
  "json_url": "https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2016/schedule-14/paragraph-46.json",
  "legislation": "uksi/2016/362",
  "legislation_title": "The Traffic Signs Regulations and General Directions 2016",
  "legislation_url": "https://openlegislation.uk/traffic-signs-regulations-and-general-directions-2016",
  "path": "schedule/14/paragraph/46",
  "kind": "paragraph",
  "number": "46",
  "heading": null,
  "text": "(1) Equipment used in connection with the signals (including the content of all instructions stored in, or executable by, that equipment) may only be placed if, at the time it is first placed, it complies with the requirements of BS EN 12675:2001 and BS EN 50556:2011.\n(2) Sub-paragraphs (3) to (7) make provision about how the Standards are to apply.\n(3) In relation to the requirements of BS EN 12675:2001, if the state specified in column 2 of an item in table 1 occurs, the class of response that applies is that set out in column 3.\n(4) In relation to the requirements of BS EN 50556:2011, the class of response for an aspect of performance at an item in table 2 in column 3 (within a subject area in column 2) is that in column 4.\n(5) The signal states which endanger traffic for the purposes of 5.2.3 of BS EN 50556:2011 are those specified in column 2 of table 1 at item 1, 2, 4 or 16.\n(6) Upon a state described in sub-paragraph (5) occurring, all signal heads and push button units must switch off in accordance with the classes of response specified in column 4 of table 2 at items 6 and 7.\nTable 1:\nRequirements of BS EN 12675:2001\n(1)\nItem\n(2)\nState\n(3)\nClass\n1\nGreen-green conflict\nAA1\n2\nGreen-yellow conflict\nAB1\n3\nYellow-yellow conflict\nAC0\n4\nGreen-red/yellow conflict\nAD1\n5\nGreen-green/yellow conflict\nAE0\n6\nAbsence of any conflicting red signal\nAF0\n7\nAbsence for conflicting red on specified signal heads\nAG0\n8\nAbsence of the last conflicting red signal\nAH0\n9\nAbsent red/absent red\nAJ0\n10\nNational signal regulations (infringement)\nBA0\n11\nAbsence of a red signal on a specified signal group\nCA1\n12\nAbsence of the last red signal\nCB1\n13\nAbsence of a number of red signals\nCC1\n14\nAbsence of specified red signals\nCD0\n15\nAbsent signal groups, yellow or green signals\nCE0\n16\nCompliance checking\nDA1\n17\nStored values of timings\nFA1\n18\nTime base frequency\nFB0\n19\nMinimum values of time settings\nFC0\n20\nMaximum values of time settings\nFD0\n21\nDuration of timings\nFE0\n22\nNational signal sequences (infringement)\nGA0\n23\nSpecified signal group green to signal group green movements\nGB0\n24\nSpecified signal start-up sequence signal group movements\nGC0\n25\nFailure of external inputs\nHA1\nTable 2:\nRequirements of BS EN 50556:2011\n(1)\nItem\n(2)\nSubject area\n(3)\nAspect of performance\n(4)\nClass\n1\nElectrical supply\nOvervoltage\nD0\n2\nSafety\nLeakage current\nT2\n3\nEnclosure\nV2\n4\nTerminations\nH0\n5\nRequirements of signalling intensity for safety\nAF5\n6\nRequirements for signal states (i)\nAG5\n7\nRequirements for signal states (ii)\nX1\n8\nLocation of monitoring elements for signals\nN0\n9\nTest of impedance\nFault loop impedance test\nAA1\n10\nMaintenance\nMaintenance testing procedures\nY1\n11\nEnvironmental\nDry heat\nAB3\n12\nCold\nAE2\n13\nDamp heat, cyclic\nAK2\n14\nSolar radiation\nAH0\n15\nRandom vibration (operational)\nAL2\n16\nRandom vibration (transportation)\nAM2",
  "extent": "E+W+S",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "I",
      "label": "I1",
      "text": "Sch. 14 para. 46 in force at 22.4.2016, see reg. 1(b)"
    },
    {
      "type": "footnote",
      "label": "f1",
      "text": "Publication date 15th February 2001 (ISBN 0580368866)"
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "Publication date 30th April 2011 (ISBN 9780580707285)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2016/362/schedule/14/paragraph/46",
    "retrieved_at": "2026-11-05T03:41:34.516500+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."
}