# 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), Division 5.4: Frequency and scope of ISC testing


The time period between commencing two in-service conformity checks by the manufacturer for a given ISC family shall not exceed 24 months.
The frequency of ISC testing performed by the granting type approval authority shall be based on a risk assessment methodology consistent with the international standard ISO 31000:2018 — Risk Management — Principles and guidelines which shall include the results of the initial assessment made according to point 4.
As of 1 January 2020, granting type approval authorities shall perform the Type 1 and RDE tests on a minimum of 5 % of the ISC families per manufacturer per year or at least two ISC families per manufacturer per year, where available. The requirement for testing a minimum of 5 % or at least two ISC families per manufacturer per year shall not apply to small volume manufacturers. The granting type approval authority shall ensure the widest possible coverage of ISC families and vehicle age in a particular in-service conformity family in order to ensure compliance according to Article 8, paragraph 3. The granting type approval authority shall complete the statistical procedure for each ISC family it has started within 12 months.
Type 4 or Type 6 ISC tests shall have no minimum frequency requirements.

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Source: https://www.legislation.gov.uk/eur/2017/1151/annex/II/part/B/division/5/division/5.4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-1151/annex-II/part-B/division-5/division-5.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.