F1ANNEX VIIIConditions governing the testing of vehicles with inertia (overrun) braking systems
7.TESTS AND MEASUREMENTS TO BE CARRIED OUT ON THE BRAKES
7.1.
The brakes and items of equipment made available to the technical service responsible for the tests shall be tested to check whether they conform to the requirements of point 6.
7.2.
The following shall be determined:
7.2.1.
The minimum shoe centre lift 2sB*.
7.2.2.
The shoe centre lift 2sB (which shall be greater than 2sB*).
7.2.3.
The braking moment M as a function of the force P applied to the control lever in the case of devices with mechanical transmission, and of the pressure p in the brake cylinder in the case of devices with hydraulic transmission.
The speed at which the braking surfaces rotate shall correspond to an initial vehicle speed of 60 km/h. The following is deduced from the curve obtained from these measurements:
7.2.3.1.
The retraction force PO and the characteristic ρ in the case of mechanically actuated brakes (see diagram 6 in Appendix 1).
7.2.3.2.
The retraction pressure po and the characteristic ρ′ in the case of hydraulically actuated brakes (see diagram 7 in Appendix 1).
Substituted by Commission Directive 98/12/EC of 27 January 1998 adapting to technical progress Council Directive 71/320/EEC on the approximation of the laws of the Member States relating to the braking devices of certain categories of motor vehicles and their trailers (Text with EEA relevance).