See also:

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

Displays in the instrument cluster
Desired speed ▷ The marking lights up in green: the system is active. ▷ The marking lights up in orange: the system has been interrupted. ▷ The marking does not light up: ...

Mirror display
The point of the compass is displayed in the mirror when driving straight. ...