# 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 5.3

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

In the case of mechanical-transmission inertia braking systems, the following should be determined:
5.3.1. The reduction ratio iHo measured at the mid-travel position of the control;
5.3.2. The control-device output force P′ as a function of the thrust D on the drawbar; the supplementary force K and the efficiency are derived from the representative curve obtained from these measurements
η H0 = 1 i H0 × P′ D − K (see Figure 2 of Appendix 1).

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Source: https://www.legislation.gov.uk/eur/2015/68/annex/VIII/division/5/division/5.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2015-68/annex-VIII/division-5/division-5.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.