Division 3.1.3.4

On tractors to which the coupling of towed vehicles is authorised, the parking braking system of the tractor shall be capable of holding the vehicle combination, at the maximum permissible mass as specified by the tractor manufacturer, stationary on a 12 % up or down gradient.

F1In the case that this requirement cannot be met due to physical limitations (e.g. limited available tyre/road adhesion for the tractor to generate sufficient braking forces or in the case that the purely mechanical parking braking system performance of the tractor as prescribed in point 3.1.3.1 is not sufficient to hold the combination) it is deemed to be fulfilled when the alternative requirement set out in point 3.1.3.4.1 of this Annex in connection with point 2.2.1.20 of Annex I is complied with.