The concept
The parking brake is primarily intended to prevent the vehicle from rolling while parked; it brakes the rear wheels.

See also:
Warning stages
Prewarning
This warning is issued, for example, when there
is the impending danger of a collision or the distance
to the vehicle ahead is too small.
Acute warning
Warning of the imminent danger ...
Suitable media
Use of CDs/DVDs
▷ Do not use self-recorded CDs/DVDs
with labels applied, as these can become
detached during playback due
to heat buildup and can cause irreparable
damage to the devic ...
Activating
Switch position with the
ignition switched
on.
The turning lamps are automatically switched
on depending on the steering angle or the use
of turn signals.
To avoid blinding oncoming traffic ...
