18.2.2014 Official Journal of the European Union L 471 (Non-legislative acts) REGULATIONS COMMISSION REGULATION (EU) No 133/2014 of 31 January 2014 amending, for the purposes of adapting to technical progress as regards emission limits, Directive 2007/46[EC of the European Parliament and of the Council, Regulation (EC) No 595/2009 of the European Parliament and of the Council and Commission Regulation (EU) No 582/2011 (Text with EEA relevance) THE EUROPEAN COMMISSION, Having regard to the Treaty on the Functioning of the European Union, Having regard to Directive 2007/46/EC of the European Parliament and of the Council of 5 September 2007 estab- lishing a framework for the approval of motor vehicles and their trailers, and of systems, components and separate technical wunits intended for such vehicles (Framework Directive) ('), and in particular Article 39(2), (6) and (7) thereof. Having regard to Regulation (EC) No 595/2009 of the European Parliament and of the Council of 18 jJune 2009 on type- approval of motor vehicles and engines with respect to emissions from heavy duty vehicles (Euro VI) and on access to vehicle repair and maintenance information and amending Regulation (EC) No 715/2007 and Directive 2007/46/EC and repealing  Directives  80/1269/EEC, ~ 2005/55/EC  and 2005/78[EC (), and in particular Articles 4(3), 5(4) and 6(2), and Article 12 thereof, Whereas: (1) Regulation (EC) No 595/2009 establishes emission limits and common technical requirements for the type- approval of motor vehicles and replacement parts with regard to their emissions, laying down rules for in-service conformity, on-board diagnostic (OBD) systems and measurement of fuel consumption. (2)  In order to raise the level of environmental performance of the vehicles, a particulate number limit for positive ignition engines should be introduced. 263, 9.10.2007, p. 1. 188, 18.7.2009, p. 1. = () 0] 0] (3)  The legislation on type-approval of motor vehicles and engines with respect to emissions from heavy-duty vehicles (Euro VI) needs to be adapted to technical progress. Therefore, the requirements for type-approval and in-service conformity of engines and vehicles using dual-fuel technologies need to be provided for. Additional matters relating to the type-approval of engines using gaseous fuels should also be addressed. (4)  Commission Regulation (EU) No 582/2011 (}) requires that the on-board diagnostic (OBD) threshold limit (OTL) for carbon monoxide emissions be specified. (5)  In the case of heavy-duty vehicles with a technically permissible maximum laden mass not exceeding 7,5 tons, it is appropriate to allow that OBD systems fitted into those vehicles be partially developed in accordance with the OBD rules applicable to light-duty vehicles, without undermining their level of environmental performance. (6)  Regulation (EU) No 582/2011 refers repeatedly to the regulations of the United Nations Economic Commission for Europe (UNECE), and in particular to UNECE Regu- lation No 49 (¥, regarding the technical requirements to be followed at type-approval and in-service conformity by Member States, manufacturers and technical services. Since a 06 series of amendments of UNECE Regulation (}) Commission Regulation (EU) No 582/2011 of 25 May 2011 imple- menting 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 (O] L 167, 25.6.2011, p. 1). (*) OJ L 171, 24.6.2013, p. 1.