Division 1.2.1

Vehicles equipped with a hydraulic braking system with stored energy shall meet the following requirements:

1. 1.2.1.1.

   After eight full-stroke actuations of the service braking system control device, it shall still be possible to achieve, on the ninth application, the performance prescribed for the secondary braking system.

2. 1.2.1.2.

   Testing shall be performed in conformity with the following requirements:

   1. 1.2.1.2.1.

      Testing shall commence at a pressure that may be specified by the manufacturer but is not higher than the cut-in pressure.

   2. 1.2.1.2.2.

      The energy storage devices shall not be fed; in addition, any energy storage devices for auxiliary equipment shall be isolated.