Division 2.2.1.19

In the case of a tractor authorised to tow a vehicle of categories R3, R4 or S2, the service braking system of the towed vehicle may only be operated in conjunction with the service, secondary or parking braking system of the tractor. However, automatic application of the towed vehicle brakes alone is permitted where the operation of the towed vehicle brakes is initiated automatically by the tractor for the sole purpose of vehicle stabilisation.