{
  "url": "https://openlegislation.uk/railways-interoperability-regulations-2011/schedule-5/paragraph-2.1",
  "json_url": "https://openlegislation.uk/railways-interoperability-regulations-2011/schedule-5/paragraph-2.1.json",
  "legislation": "uksi/2011/3066",
  "legislation_title": "The Railways (Interoperability) Regulations 2011",
  "legislation_url": "https://openlegislation.uk/railways-interoperability-regulations-2011",
  "path": "schedule/5/paragraph/2.1",
  "kind": "paragraph",
  "number": "2.1",
  "heading": null,
  "text": "If the entity introducing the modifications demonstrates that the modification does not affect the basic design characteristics of the subsystem which are relevant for the compliance with the requirements concerning the basic parameters:\n(a) the entity introducing the modification shall update the references of the documents contained in the technical file accompanying the EC or UK declaration of verification, and\n(b) no new UK declaration of verification needs to be established.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Sch. 5 inserted (31.12.2020) by The Railways (Interoperability) (Amendment) (EU Exit) Regulations 2019 (S.I. 2019/345), reg. 1(2), Sch. 4 (as amended by The Railways (Miscellaneous Amendments, Revocations and Transitional Provisions) (EU Exit) Regulations 2020 (S.I. 2020/786), regs. 1(2)(b)(i), 4(10)); 2020 c. 1, Sch. 5 para. 1(1)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/2011/3066/schedule/5/paragraph/2.1",
    "retrieved_at": "2026-10-29T01:46:33.800983+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."
}