{
  "url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/7/division/division-5.",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/7/division/division-5..json",
  "legislation": "eur/2017/1151",
  "legislation_title": "Commission Regulation (EU) 2017/1151 of 1 June 2017 supplementing Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information, amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) No 1230/2012 and repealing Commission Regulation (EC) No 692/2008 (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-1151",
  "path": "annex/Sub/7/division/division/5.",
  "kind": "division",
  "number": "5",
  "heading": "Calculation of cycle energy demand",
  "text": "Unless otherwise specified, the calculation shall be based on the target speed trace given in discrete time sample points.\nFor the calculation, each time sample point shall be interpreted as a time period. Unless otherwise specified, the duration Δt of these periods shall be 1 second.\nThe total energy demand E for the whole cycle or a specific cycle phase shall be calculated by summing Ei over the corresponding cycle time between tstart and tend according to the following equation:\nE=∑tstarttend Eiwhere:\nEi=Fi× di if Fi> 0\nEi=0 if Fi≤ 0\nand:\ntstartis the time at which the applicable test cycle or phase starts, s;\ntendis the time at which the applicable test cycle or phase ends, s;\nEiis the energy demand during time period (i-1) to (i), Ws;\nFiis the driving force during time period (i-1) to (i), N;\ndiis the distance travelled during time period (i-1) to (i), m.\nFi=f0+ f1×vi+ vi− 12+ f2×vi+ vi− 124+1.03× TM× aiwhere:\nFiis the driving force during time period (i-1) to (i), N;\nviis the target velocity at time ti, km/h;\nTMis the test mass, kg;\naiis the acceleration during time period (i-1) to (i), m/s2;\nf0, f1, f2 are the road load coefficients for the test vehicle under consideration (TML, TMH or TMind) in N, N/km/h and in N/(km/h)2 respectively.\ndi=vi+ vi− 12× 3,6×ti− ti− 1where:\ndiis the distance travelled in time period (i-1) to (i), m;\nviis the target velocity at time ti, km/h;\ntiis time, s.\nai=vi− vi− 13,6×ti− ti− 1where:\naiis the acceleration during time period (i-1) to (i), m/s2;\nviis the target velocity at time ti, km/h;\ntiis time, s.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Regulation (EU) 2018/1832 of 5 November 2018 amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) 2017/1151 for the purpose of improving the emission type approval tests and procedures for light passenger and commercial vehicles, including those for in-service conformity and real-driving emissions and introducing devices for monitoring the consumption of fuel and electric energy (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/7/division/division/5.",
    "retrieved_at": "2026-11-01T14:44:48.753743+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."
}