{
  "url": "https://openlegislation.uk/railways-safety-management-regulations-northern-ireland-2006/schedule-7/paragraph-14",
  "json_url": "https://openlegislation.uk/railways-safety-management-regulations-northern-ireland-2006/schedule-7/paragraph-14.json",
  "legislation": "nisr/2006/237",
  "legislation_title": "THE RAILWAYS (SAFETY MANAGEMENT) REGULATIONS (NORTHERN IRELAND) 2006",
  "legislation_url": "https://openlegislation.uk/railways-safety-management-regulations-northern-ireland-2006",
  "path": "schedule/7/paragraph/14",
  "kind": "paragraph",
  "number": "14",
  "heading": "Measurement units for NRVs and CSTs",
  "text": "The following table sets out the measurement units for NRVs and CSTs.\nRisk category\nMeasurement units\nScaling bases\n1. Risks to passengers\n1.1 Number of passenger FWSIs per year arising from significant accidents/Number of passenger train-km per year\nPassenger train-km per year\n1.2 Number of passenger FWSIs arising from significant accidents/Number of passenger-km per year\nPassenger-km per year\n2. Risks to staff or employees, including the staff of contractors\n2. Number of employee FWSIs per year arising from significant accidents/Number of train-km per year\nTrain-km per year\n3. Risks to level crossing users\n3.1 Number of level-crossing user FWSIs per year arising from significant accidents/Number of train-km per year\nTrain-km per year\n3.2 Number of level-crossing user FWSIs per year arising from significant accidents/[(Number of Train-km per year x Number of level crossings)/Track-km)]\n(Train-km per year x Number of level crossings)/Track-km\n4. Risks to others\n4. Yearly number of FWSIs to persons belonging to the category ‘others’ arising from significant accidents/Number of train-km per year\nTrain-km per year\n5. Risks to unauthorised persons on railway premises\n5. Number of FWSIs to unauthorised persons on railway premises per year arising from significant accidents/Number of train-km per year\nTrain-km per year\n6. Risk to society as a whole\n6. Total number of FWSIs per year arising from significant accidents/Number of train-km per year\nTrain-km per year",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Sch. 7 inserted (31.12.2020) by The Railways (Safety Management) (Amendment) (EU Exit) Regulations (Northern Ireland) 2019 (S.I. 2019/825), reg. 1(2), Sch. para. 1 (as amended by S.I. 2019/1310, reg. 1(2)(c), Sch. 2 paras. 2, 3, 4, 5); 2020 c. 1, Sch. 5 para. 1(1)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/nisr/2006/237/schedule/7/paragraph/14",
    "retrieved_at": "2026-10-29T01:46:35.059486+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."
}