# 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 2.5: Target conditions

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

The sound emission shall be measured in each valid gear ratio at the four test points as specified below.
The first test point P1 is defined by using an entry speed vAA of 20 km/h. If a stable acceleration condition cannot be achieved, the speed shall be increased in steps of 5 km/h until a stable acceleration is reached.
The fourth test point P4 is defined by the maximum vehicle speed at BB' in that gear ratio within the boundary conditions in accordance with point 2.3.
The other two test points are calculated using the following formula:
Test Point Pj: vBB_j = vBB_1 + ((j – 1)/3) * (vBB_4 – vBB_1) for j = 2 and 3
Where:
vBB_1vehicle speed at BB' of test point P1
vBB_4vehicle speed at BB' of test point P4
Tolerance for vBB_j: ±3 km/h
For all test points the boundary conditions as specified in point 2.3 shall be met.

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Source: https://www.legislation.gov.uk/eur/2014/540/annex/VII/division/2/division/2.5 (the official version)
Page: https://openlegislation.uk/eu-regulation-2014-540/annex-VII/division-2/division-2.5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.