Dynamic Safety (only available with Active Security Package) is the BMW ConnectedDrive preventive occupant protection system. If a critical situation arises on the road, the front safety belts are pretensioned, the electrically adjustable front passenger seat is returned to the upright position and the side windows are closed along with the sliding roof (if present). A critical situation would include an emergency stop made by the driver or if the automobile demonstrated excessive understeer or oversteer.
In certain accident situations, maximum deceleration can be applied to your automobile to bring it to a complete standstill. This helps reduce the likelihood of a second collision or even prevent one altogether.
The Attentiveness Assistant also monitiors your behaviour for signs of fatigue. Your steering responses are analysed and the system reacts to irregular driving behaviour. A notification appears in the Control Display suggesting you take a break.