"3.1.2 Pri vozilu, ki lahko vleče priklopna vozila kategorij O3 ali O4, opremljena s pnevmatskimi zavorami, ko pri preskusu s prekinjenim virom energije, blokiranim napajalnim vodom in upravljalnim vodom, povezanim s posodo prostornine 0,5 litra, mora biti tlak pri polni uporabi naprave za upravljanje med 6,5 in 8 bari na spojni glavi napajalnega voda in med 6 in 7,5 bara na spojni glavi upravljalnega voda, ne glede na obremenjenost vozila."
3.1.2.In the case of a vehicle authorized to draw trailers of category O3 or O4 fitted with compressed air brakes, when tested with the energy source stopped, the supply line blocked off and a reservoir of 0,5-litre capacity connected to the control line, the pressure at full application of the braking control must be between 6,5 and 8 bar at the coupling head of the supply line and between 6 and 7,5 bar at the coupling head of the control line, irrespective of the load condition of the vehicle.