See also:

Strength of the driver's and frontpassenger airbag
The strength with which the driver's and front passenger airbags are triggered depends on the position of the driver's and front passenger seats. To maintain the accuracy of this function over ...

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

Head airbags
In a lateral impact, the head airbag supports the head. ...