{
  "url": "https://openlegislation.uk/eu-decision-2002-731/annex/division-2/division-2.2/division-2.2.3",
  "json_url": "https://openlegislation.uk/eu-decision-2002-731/annex/division-2/division-2.2/division-2.2.3.json",
  "legislation": "eudn/2002/731",
  "legislation_title": "Commission Decision of 30 May 2002 concerning the technical specification for interoperability relating to the control-command and signalling subsystem of the trans-European high-speed rail system referred to in Article 6(1) of Council Directive 96/48/EC (notified under document number C(2002) 1947) (Text with EEA relevance) (2002/731/EC)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2002-731",
  "path": "annex/division/2/division/2.2/division/2.2.3",
  "kind": "division",
  "number": "2.2.3",
  "heading": "LEVELS OF APPLICATION",
  "text": "Control-command interfaces provide for the means of data transmission to, and sometimes from, the trains. The class A specifications called up by this TSI provide options from which a project may choose the means of transmission that meet its requirements. By convention, three levels of application are defined:\nlevel 1 the data transmission requirement is met by intermittent (Eurobalise) and in some cases semi continuous (Euroloop or radio infill) transmission along the track. The detection of trains is achieved by track-based equipment, usually track circuits or axle counters. Information is communicated to the driver from either the line side, or cab-signalling,\nlevel 2 the data transmission requirement is met by radio (GSM-R) transmission along the track. For some functions, the radio transmission requires complementing by intermittent (Eurobalise) transmission. The detection of trains is achieved by track-based equipment, usually track circuits or axle counters. Information is communicated to the driver by cab-signalling,\nlevel 3 the data transmission requirement is met by radio (GSM-R) transmission along the track. For some functions, the radio transmission requires complementing by intermittent (Eurobalise) transmission. The detection of trains is achieved by train-based equipment reporting to the command-control data-processing system. Information is communicated to the driver by cab-signalling.\nThe requirements of this TSI apply to all levels of application. The implementation issue is addressed in Chapter 7. A train equipped with class A interfaces for a given level of application shall be able to operate with that level of application 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/2002/731/annex/division/2/division/2.2/division/2.2.3",
    "retrieved_at": "2026-11-01T15:18:30.359571+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."
}