Division 3.2.1.2 Requirement relating to tests of category R2 vehicles

If the service braking system is of the continuous or semi-continuous type, the sum of the forces exerted at the periphery of the braked wheels shall be at least X % of the maximum stationary wheel load.

X

50 for towed vehicle with a maximum design speed exceeding 30 km/h

X

35 for towed vehicle with a maximum design speed not exceeding 30 km/h

Where the towed vehicle is fitted with a compressed-air braking system, the pressure in the control line shall not exceed 650 kPa (and/or a corresponding digital demand value as defined in ISO 11992:2003 including ISO 11992-2:2003 and its Amd.1:2007 in the electric control line) and the pressure in the supply line shall not exceed 700 kPa during the brake test.

Where the towed vehicle is fitted with a hydraulic braking system, the pressure in the control line shall not exceed 11 500 kPa and the pressure in the supplementary line shall be between 1 500 kPa and 1 800 kPa during the brake test.

The test speed is 60 km/h or the maximum design speed of the towed vehicle, whichever is the lower.

Where the braking system is of the inertia type, it shall comply with the conditions laid down in Annex VIII.