{
  "url": "https://openlegislation.uk/eu-regulation-2017-2400/annex-Xa/division-5/division-5.9",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-2400/annex-Xa/division-5/division-5.9.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/Xa/division/5/division/5.9",
  "kind": "division",
  "number": "5.9",
  "heading": "General requirements for the on-board measurements",
  "text": "All data shall be recorded at least in 2 Hz frequency or at recommended frequency from the equipment maker, whichever is the higher value.\nThe input data for the simulation tool may be composed from different recorders. The following input data shall be provided from measurements:\n(a) torque at the driven wheels per wheel;\n(b) rotational speed at the driven wheels per wheel;\n(c) gear (optional);\n(d) engine speed;\n(e) fan speed;\n(f) vehicle speed;\n(g) fuel flow.\nThe torque and rotational speed at the wheels shall be recorded in one data-logging system. If different data-logging systems are used for the other signals, one common signal, such as vehicle speed, shall be recorded to ensure correct time alignment of the signals.\nThe accuracy requirements set out in Table 2 shall be met by all measurement equipment used. Any equipment not listed in Table 2 shall fulfil the accuracy requirements set out in Table 2 of Annex V.\nTable 2\nRequirements of measurement systems\nRise time means the difference in time between the 10 percent and 90 percent response of the final analyser reading (t90 – t10).\nThe accuracy shall be met for the integral fuel flow over 100 minutes.\nMeasurement system\nAccuracy\nRise time\nBalance for vehicle weight\n50 kg or\n< 0,5 % of max. calibration\nwhichever is smaller\n—\nRotational speed wheels\n< 0,5 % of max. calibration\n≤ 1 s\nFuel mass flow for liquid fuels\n< 1,0 % of reading or\n< 0,5 % of max. calibration\nwhichever is larger\n≤ 2 s\nFuel volume measurement system\n< 1,0 % of reading or\n< 0,5 % of max. calibration\nwhichever is larger\n≤ 2 s\nTemperature of the fuel\n± 1 °C\n≤ 2 s\nSensor for measuring the rotational speed cooling fan\n0,4 % of reading or 0,2 % of max. calibration of speed whichever is larger\n≤ 1 s\nEngine speed\nAs set out in Annex V\nWheel torque\nFor 10 kNm calibration:\n< 40 Nm accuracy\n< 20 Nm crosstalk\n< 0,1 s\nThe maximum calibration values shall be at least 1,1 times the maximum predicted value expected during all test runs for the respective measurement system. For the torque measurement system the maximum calibration may be limited to 10 kNm.\nAccuracy given shall be met by the sum of all single accuracies in the case more than one scale is used.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Inserted 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": "Rise time means the difference in time between the 10 percent and 90 percent response of the final analyser reading (t90 – t10)."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "The accuracy shall be met for the integral fuel flow over 100 minutes."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/2400/annex/Xa/division/5/division/5.9",
    "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."
}