# Regulation (EU) No 540/2014 of the European Parliament and of the Council of 16 April 2014 on the sound level of motor vehicles and of replacement silencing systems, and amending Directive 2007/46/EC and repealing Directive 70/157/EEC (Text with EEA relevance), Division 1.2.4

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

During the test, the silencing system, or components thereof, shall not be cooled by a forced draught simulating normal airflow around the vehicle. Nevertheless, at the request of the manufacturer, the silencing system or components thereof may be cooled in order not to exceed the temperature recorded at its inlet when the vehicle is running at maximum speed.

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Source: https://www.legislation.gov.uk/eur/2014/540/annex/IV/division/1/division/1.2/division/1.2.4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2014-540/annex-IV/division-1/division-1.2/division-1.2.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.