{
  "url": "https://openlegislation.uk/eu-decision-2006-860/annex/division-2/division-2.2/division-2.2.3",
  "json_url": "https://openlegislation.uk/eu-decision-2006-860/annex/division-2/division-2.2/division-2.2.3.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/2/division/2.2/division/2.2.3",
  "kind": "division",
  "number": "2.2.3",
  "heading": "Levels of Application (ERTMS/ETCS)",
  "text": "The interfaces specified by this TSI define the means of data transmission to, and sometimes from, trains. The Class A specifications referenced by this TSI provide options from which a project may choose the means of transmission that meet its requirements. Three levels of application are defined:\nLevel 1: Data transmission is achieved by spot transmission (Eurobalise) and in some cases by semi-continuous transmission (Euroloop or radio in-fill). The detection of trains is achieved by track-based equipment, usually track-circuits or axle counters. Signalling information is communicated to the driver by equipment in the driving cab and, optionally, lineside signals.\nLevel 2: Data transmission is achieved by continuous radio transmission (GSM-R). For some functions, the radio transmission requires complementing by spot transmission (Eurobalise). The detection of trains is achieved by track-based equipment, usually track-circuits or axle counters. Signalling information is communicated to the driver by equipment in the driving cab and, optionally, lineside signals.\nLevel 3: Data transmission is achieved by continuous radio transmission (GSM-R). For some functions, the radio transmission requires complementing by spot transmission (Eurobalise). The detection of trains is achieved by equipment on-board, reporting to the Control-Command Track-side Assembly. Signalling information is communicated to the driver by equipment in the driving cab.\nThe requirements of this TSI apply to all levels of application. Implementation is addressed in Chapter 7 (Implementation of the TSI Control-Command). A train equipped with a Class A On-board system for a given level of application shall be able to operate on that level and any lower one.",
  "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/2/division/2.2/division/2.2.3",
    "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."
}