{
  "url": "https://openlegislation.uk/eu-regulation-2017-2400/annex-VIII/division-3/division-3.9",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-2400/annex-VIII/division-3/division-3.9.json",
  "legislation": "eur/2017/2400",
  "legislation_title": "Commission Regulation (EU) 2017/2400 of 12 December 2017 implementing Regulation (EC) No 595/2009 of the European Parliament and of the Council as regards the determination of the CO2 emissions and fuel consumption of heavy-duty vehicles and amending Directive 2007/46/EC of the European Parliament and of the Council and Commission Regulation (EU) No 582/2011 (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-2400",
  "path": "annex/VIII/division/3/division/3.9",
  "kind": "division",
  "number": "3.9",
  "heading": "Input data for air drag pre-processing tool",
  "text": "The following tables show the requirements for the measurement data recording and the preparatory data processing for the input into the air drag pre-processing tool:\nTable 2 for the vehicle data file\nTable 3 for the ambient conditions file\nTable 4 for the measurement section configuration file\nTable 5 for the measurement data file\nTable 6 for the altitude profile files (optional input data)\nA detailed description of the requested data formats, the input files and the evaluation principles can be found in the technical documentation of the air drag pre-processing tool. The data processing shall be applied as specified in section 3.8 of this Annex.\nTable 2\nInput data for the air drag pre-processing tool – vehicle data file\nSpecification of transmission ratios with at least 3 digits after decimal separator\nIf the wheel speed signal is provided to the air drag pre-processing tool (option for vehicles with torque converters, see section 3.4.3 the axle ratio shall be set to ‘1.000’.\nInput only required if value is lower than 88 km/h.\nInput data\nUnit\nRemarks\nVehicle group code\n[-]\n1 - 17 for trucks\nVehicle configuration with trailer\n[-]\nif the vehicle was measured without trailer (input ‘No’) or with trailer i.e. as a truck/trailer or tractor semitrailer combination (input ‘Yes’)\nVehicle test mass\n[kg]\nactual mass during measurements\nGross vehicle mass\n[kg]\ngross vehicle mass of the rigid lorry or tractor (w/o trailer or semitrailer)\nAxle ratio\n[-]\naxle transmission ratio\nGear ratio high speed\n[-]\ntransmission ratio of gear engaged during high speed test\nGear ratio low speed\n[-]\ntransmission ratio of gear engaged during low speed test\nAnemometer height\n[m]\nheight above ground of the measurement point of installed anemometer\nVehicle height\n[m]\nmaximum vehicle height according to 3.5.3.1 item vii.\nGear box type\n[-]\nmanual or automated transmission: ‘ SMT ’ , ‘ AMT ’ , ‘ DCT ’ , automatic transmission with torque converter: ‘ APT ’\nVehicle maximum speed\n[km/h]\nmaximum speed the vehicle can be practically operated at the test track\nTable 3\nInput data for the air drag pre-processing tool – ambient conditions file\nSignal\nColumn identifier in input file\nUnit\nMeasurement rate\nRemarks\nTime\n<t>\n[s] since day start (first day)\n—\n—\nAmbient temperature\n<t_amb_stat>\n[°C]\nAt least 1 averaged value per 6 minutes\nStationary weather station\nAmbient pressure\n<p_amb_stat>\n[mbar]\nStationary weather station\nRelative air humidity\n<rh_stat>\n[%]\nStationary weather station\nTable 4\nInput data for air drag pre-processing tool – measurement section configuration file\nInput data\nUnit\nRemarks\nTrigger signal used\n[-]\n1 = trigger signal used; 0 = no trigger signal used\nMeasurement section ID\n[-]\nuser defined ID number\nDriving direction ID\n[-]\nuser defined ID number\nHeading\n[°]\nheading of the measurement section\nLength of the measurement section\n[m]\n—\nLatitude start point of section\ndecimal degrees or decimal minutes\nstandard GPS, unit decimal degrees:\nminimum 5 digits after decimal separator\nLongitude start point of section\nstandard GPS, unit decimal minutes:\nminimum 3 digits after decimal separator\nLatitude end point of section\nDGPS, unit decimal degrees:\nminimum 7 digits after decimal separator\nLongitude end point of section\nDGPS, unit decimal minutes:\nminimum 5 digits after decimal separator\nPath and/or filename of altitude file\n[-]\nonly required for the constant speed tests (not the misalignment test) and if the altitude correction is enabled.\nTable 5\nInput data for the air drag pre-processing tool – measurement data file\nSignal\nColumn identifier in input file\nUnit\nMeasurement rate\nRemarks\nTime\n<t>\n[s] since day start (of first day)\n100 Hz\nrate fixed to 100 Hz; time signal used for correlation with weather data and for check of frequency\n(D)GPS latitude\n<lat>\ndecimal degrees or decimal minutes\nGPS: ≥ 4 Hz\nDGPS: ≥ 100 Hz\nstandard GPS, unit decimal degrees:\nminimum 5 digits after decimal separator\n(D)GPS longitude\n<long>\nstandard GPS, unit decimal minutes:\nminimum 3 digits after decimal separator\nDGPS, unit decimal degrees:\nminimum 7 digits after decimal separator\nDGPS, unit decimal minutes:\nminimum 5 digits after decimal separator\n(D)GPS heading\n<hdg>\n[°]\n≥ 4Hz\nDGPS velocity\n<v_veh_GPS>\n[km/h]\n≥ 20 Hz\nVehicle velocity\n<v_veh_CAN>\n[km/h]\n≥ 20 Hz\nraw CAN bus front axle signal\nAir speed\n<v_air>\n[m/s]\n≥ 4 Hz\nraw data (instrument reading)\nInflow angle (beta)\n<beta>\n[°]\n≥ 4 Hz\nraw data (instrument reading); ‘180°’ refers to air flow from front\nEngine speed or cardan speed\n<n_eng> or <n_card>\n[rpm]\n≥ 20 Hz\ncardan speed for vehicles with torque converter not locked during low speed test\nTorque meter (left wheel)\n<tq_l>\n[Nm]\n≥ 20 Hz\n—\nTorque meter (right wheel)\n<tq_r>\n[Nm]\n≥ 20 Hz\nAmbient temperature on vehicle\n<t_amb_veh>\n[°C]\n≥ 1 Hz\nTrigger signal\n<trigger>\n[-]\n100 Hz\noptional signal; required if measurement sections are identified by opto electronic barriers (option ‘trigger_used=1’)\nProving ground temperature\n<t_ground>\n[°C]\n≥ 1 Hz\nValidity\n<valid>\n[-]\n—\noptional signal (1=valid; 0=invalid);\nTable 6\nInput data for the air drag pre-processing tool – altitude profile file\nInput data\nUnit\nRemarks\nLatitude\ndecimal degrees or decimal minutes\nunit decimal degrees:\nminimum 7 digits after decimal separator\nLongitude\nunit decimal minutes:\nminimum 5 digits after decimal separator\nAltitude\n[m]\nminimum 2 digits after decimal separator",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Regulation (EU) 2019/318 of 19 February 2019 amending Regulation (EU) 2017/2400 and Directive 2007/46/EC of the European Parliament and of the Council as regards the determination of the CO2 emissions and fuel consumption of heavy-duty vehicles (Text with EEA relevance)."
    },
    {
      "type": "footnote",
      "label": "f1",
      "text": "Specification of transmission ratios with at least 3 digits after decimal separator"
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "If the wheel speed signal is provided to the air drag pre-processing tool (option for vehicles with torque converters, see section 3.4.3 the axle ratio shall be set to ‘1.000’."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "Input only required if value is lower than 88 km/h."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/2400/annex/VIII/division/3/division/3.9",
    "retrieved_at": "2026-11-01T14:44:20.922900+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."
}