# 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 4.2.3.1

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

In the vicinity of the microphone, there shall be no obstacle that could influence the acoustical field and no person shall remain between the microphone and the noise source. The meter observer shall be positioned so as not to influence the meter reading.

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Source: https://www.legislation.gov.uk/eur/2014/540/annex/II/division/4/division/4.2/division/4.2.3/division/4.2.3.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2014-540/annex-II/division-4/division-4.2/division-4.2.3/division-4.2.3.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.