# 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 3.3: Calculation of the linear sound level increase expected for each measurement

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

The sound level LASEP,kj for measurement point j and gear k shall be calculated using the engine speeds measured for each measurement point, using the slope specified in point 3.2 to the specific anchor point for each gear ratio.
For nBB_k,j ≤ nanchor,k:
LASEP_k,j = Lanchor_k + (Slopek – Y) * (nBB_k,j – nanchor,k)/1 000
For nBB_k,j > nanchor,k:
LASEP_k,j = Lanchor_k + (Slopek + Y) * (nBB_k,j – nanchor,k)/1 000
Where Y = 1

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Source: https://www.legislation.gov.uk/eur/2014/540/annex/VII/division/3/division/3.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2014-540/annex-VII/division-3/division-3.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.