Division 1.2.1

The reservoirs of agricultural vehicles shall be such that it is still possible to achieve the performance prescribed for the secondary braking system:

1. 1.2.1.1.

   after eight full-stroke actuations of the service braking system control device where the energy source is a vacuum pump; and

2. 1.2.1.2.

   after four full-stroke actuations of the service braking system control device where the energy source is the engine.