# Commission Delegated Regulation (EU) 2017/655 of 19 December 2016 supplementing Regulation (EU) 2016/1628 of the European Parliament and of the Council with regard to monitoring of gaseous pollutant emissions from in-service internal combustion engines installed in non-road mobile machinery (Text with EEA relevance), Division 4.2.2

Extent: E+W+S+N.I.

The following additional requirements shall be fulfilled when applying combined data sampling:
(a) the different operating sequences shall be obtained using the same non-road mobile machinery and engine;
(b) the combined data sampling shall contain a maximum of three operating sequences;
(c) each operating sequence in the combined data sampling shall contain a minimum of one Non-Road Transient Cycle (NRTC) work;
(d) the operating sequences in the combined data sampling shall be obtained and put together in a chronological order;
(e) the data analysis shall be applied to the complete combined data sampling;
(f) the maximum period elapsed between the first and last operating sequence shall be 72 hours;
(g) combined data sampling shall not be used if an engine malfunction occurs, as set out in point 8 of Appendix 2.

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Source: https://www.legislation.gov.uk/eur/2017/655/annex/division/4/division/4.2/division/4.2.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-655/annex/division-4/division-4.2/division-4.2.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.