{
  "url": "https://openlegislation.uk/eu-decision-2006-860/annex/division-4/division-4.2/division-4.2.2",
  "json_url": "https://openlegislation.uk/eu-decision-2006-860/annex/division-4/division-4.2/division-4.2.2.json",
  "legislation": "eudn/2006/860",
  "legislation_title": "Commission Decision of 7 November 2006 concerning a technical specification for interoperability relating to the control-command and signalling subsystem of the trans-European high speed rail system and modifying Annex A to Decision 2006/679/EC concerning the technical specification for interoperability relating to the control-command and signalling subsystem of the trans-European conventional rail system (notified under document number C(2006) 5211) (Text with EEA relevance) (2006/860/EC)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2006-860",
  "path": "annex/division/4/division/4.2/division/4.2.2",
  "kind": "division",
  "number": "4.2.2",
  "heading": "On-board ETCS functionality",
  "text": "This Basic Parameter describes the ETCS on-board functionality. It contains all functions to run a train in a safe way. The performance of the functions shall conform to Annex A, index 14 and 49. These functions shall be implemented in accordance with Annex A, index 1, 2, 4, 13, 15, 23, 53 and the technical specifications indicated below:\nCommunicating with the Control-Command Track-side Assembly. The in-fill data transmission function in ETCS Level 1 applications is only mandatory on-board under the conditions defined in Chapter 7. Data radio functionality for ETCS is only mandatory for ETCS Level 2 or ETCS Level 3 applications.\nEurobalise reception. See Annex A, index 9, 36, 43.\nEuroloop reception. See Annex A, index 16, 50.\nRadio transmission and radio messages protocol management. See Annex A, index 10, 11, 12, 18, 19, 22, 39, 40.\nCommunicating with the driver\nSupporting driving. See Annex A, index 51.\nProviding odometry information. See Annex A, index 51.\nCommunicating with the STM’s. See Annex A, index 8, 25, 26, 29, 36, 49, 52. This function includes:\nManaging the STM’s output.\nProviding data to be used by the STM.\nManaging STM transitions.\nProviding the automatic train protection function and cab-signalling. See Annex A, index 6, 7, 31, 37. This function includes:\nLocating the train in a Eurobalise co-ordination system, which is the basis for supervising the dynamic speed profile.\nCalculating the dynamic speed profile for its mission.\nSupervising the dynamic speed profile during its mission.\nSelecting the speed supervision mode.\nSupervising the train according national values\nDefining and providing the intervention function.\nSetting the train characteristics.\nDemonstrating the completeness of the train (train integrity) — mandatory for level 3, not required for level 1 or 2.\nEquipment health monitoring and degraded mode support. This function includes:\nInitialising the On-board ETCS functionality\nProviding degraded mode support.\nIsolation of the On-board ETCS functionality.\nSupport data recording for regulatory purposes. See Annex A, index 5, 41, 55.\nForwarding information/orders to the DMI and, when required, to the train interface unit, e.g. information where to close/open the air flaps, where to lower/raise the pantograph, where to open/close the main power switch, where to change from traction system A to traction system B. See Annex A, index 7.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2006/860/annex/division/4/division/4.2/division/4.2.2",
    "retrieved_at": "2026-11-01T15:17:24.266188+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."
}