# 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 4.2.5.1: Nature and number of measurements

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

The maximum sound level expressed in A-weighted decibels (dB(A)) shall be measured during the operating period referred to in point 4.2.5.3.2.1.
At least three measurements shall be taken at each measuring point.

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Source: https://www.legislation.gov.uk/eur/2014/540/annex/II/division/4/division/4.2/division/4.2.5/division/4.2.5.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2014-540/annex-II/division-4/division-4.2/division-4.2.5/division-4.2.5.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.