{
  "url": "https://openlegislation.uk/eu-decision-2006-860/annex/appendix-2",
  "json_url": "https://openlegislation.uk/eu-decision-2006-860/annex/appendix-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/appendix/2",
  "kind": "appendix",
  "number": "2",
  "heading": "Requirements on trackside hot wheelset bearing detection (‘Hot Axle Box Detection’) Systems",
  "text": "1.\nGENERAL\nThis part of TSI defines the requirements on trackside components of Hot Axle Box Detection Systems (HABD) and deals only with the Class A system.\nRolling stock concerned are those which are intended to be used on 1435mm track gauge.\nVehicles equipped with onboard hot wheelset bearing detection and shielded against trackside hot wheelset bearing detection need therefore not to be considered here.\nThe target area is defined as that surface of the wheelset bearing box which\nhas a temperature related to the axle bearing temperature and\nis completely visible for vertical trackside scanning.\nThe target area of vehicles is described by transverse and longitudinal dimensions. The target area is therefore defined as a characteristic of rolling stock and is originally defined in vehicle-side co-ordinates.\nThe scanning range is as a characteristic of the HABD System and its mounting and originally defined in track-side co-ordinates.\nTarget area (rolling stock) and scanning range (HABD) are interfacing each other and have to overlap.\nFigure a) gives an overview and shows details for the following definitions.\n2.\nSCANNING RANGE (HABD) AND TARGET AREA (ROLLING STOCK) IN TRANSVERSE DIRECTION\nHABD Systems shall have a scanning range being able to measure a hot target area of 50mm within de1 = 1 040mm to de2 = 1 120mm related to the centre-line of the vehicle at a height above top of rail between h1 = 260 mm and h2 = 500 mm (minimum range).\n3.\nSCANNING RANGE (HABD) AND TARGET AREA (ROLLING STOCK) IN LONGITUDINAL DIRECTION\nHABD-System shall measure axle boxes in a longitudinal scanning range corresponding with longitudinal target area dimensions from 80 mm up to 130 mm in the velocity range from 3 km/h up to 330 km/h.\nFor higher speeds the values will have to be defined when necessary.\n4.\nMOUNTING DIMENSIONS IN THE TRACK\nThe centre of the detection area of the HABD shall be mounted at a distance from the track centre line which guarantees the values given in 1.2. and which may consider rolling stock still not following the requirements of TSI Rolling Stock. Therefore this distance is not given by this TSI. This way the HABD should be able to detect all kind of hot axle box constructions.\nA vertical scanning is highly recommended.\n5.\nALARM-TYPES AND -LIMITS\nThe HABD shall build the following alarm-types:\nhot-alarm\nwarm-alarm\ndifference-alarm or other type of alarm.\n6.\nSPECIFICATION\nThe technical specification — including EMC requirements — has to be mandated.\nFigure a)\nTarget Area (rolling stock) and Scanning Range (HABD)",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Decision of 23 July 2012 amending Decisions 2006/679/EC and 2006/860/EC concerning technical specifications for interoperability (notified under document C(2012) 4984) (Text with EEA relevance) (2012/463/EU)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2006/860/annex/appendix/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."
}