# Commission Regulation (EU) No 582/2011 of 25 May 2011 implementing and amending Regulation (EC) No 595/2009 of the European Parliament and of the Council with respect to emissions from heavy duty vehicles (Euro VI) and amending Annexes I and III to Directive 2007/46/EC of the European Parliament and of the Council (Text with EEA relevance), Division 3.2.1.2

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

For dual-fuel engines, the approval mark shall contain a series of digits after the national symbol, the purpose of which is to distinguish for which dual-fuel engine type and with which range of gases the approval has been granted. The series of digits will be constituted of two digits identifying the dual-fuel engine type as defined in Article 2, followed by the letter or letters specified in point 3.2.1.1 corresponding to the natural gas/biomethane composition used by the engine. The two digits identifying the dual- fuel engine types as defined in Article 2 are the following:
(a)1A for dual-fuel engines of Type 1A;
(b)1B for dual-fuel engines of Type 1B;
(c)2A for dual-fuel engines of Type 2A;
(d)2B for dual-fuel engines of Type 2B;
(e)3B for dual-fuel engines of Type 3B;

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Source: https://www.legislation.gov.uk/eur/2011/582/annex/I/division/3./division/3.2./division/3.2.1./division/3.2.1.2. (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-582/annex-I/division-3./division-3.2./division-3.2.1./division-3.2.1.2.
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.