
The optionally available RAS/ AAS wheel deactivation units are electronic devices to operate additional control valves for a temporary deactivation of the wheel-related or axle-related brakes. It may be used for split-axle tests or other special functional tests during brake performance or noise evaluations. Several savety features, like preselection, canceling by a single tip on the brake pedal, emergency off, watch dog, key locks, and others round off this device.