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

See also:
The right place for children
Note
Children in the vehicle
Do not leave children unattended in the
vehicle; otherwise, they could endanger themselves
and other persons, e.g., by opening the
doors.
Children should always ...
ConnectedDrive or BMW Assist
...
General information
Do not adjust the seat while
driving
Do not adjust the driver's seat while driving,
or the seat could respond with unexpected
movement and the ensuing loss of vehicle control
could lead to a ...
