# Commission Delegated Regulation (EU) 2015/68 of 15 October 2014 supplementing Regulation (EU) No 167/2013 of the European Parliament and of the Council with regard to vehicle braking requirements for the approval of agricultural and forestry vehicles (Text with EEA relevance), Division 6.2.3.3: Successive brake tests are performed

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

Then this formula is used:
zF = zHy+F – zHy + R
zF Mean fully developed deceleration of the friction braking system including rolling resistance
zHy Mean fully developed deceleration related only to the braking effect of the hydrostatic braking system including rolling resistance
zHy+F Mean fully developed deceleration of the combination hydrostatic braking system.
R Rolling resistance = 0,02

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Source: https://www.legislation.gov.uk/eur/2015/68/annex/IX/division/6/division/6.2/division/6.2.3/division/6.2.3.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2015-68/annex-IX/division-6/division-6.2/division-6.2.3/division-6.2.3.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.