PRE-SAFE® senses that a collision is about to happen by relying on a network of sensors, most of which are already part of other safety features in the vehicle. It does so by taking note of unusual driving activity; for example, it will detect when you are skidding on slippery surfaces. Once PRE-SAFE® detects the issue, it will adjust the front head restraints for optimum support, tighten the front seat belts, and close the windows and moonroof (if present) if a rollover is possible. PRE-SAFE® does this to optimize the occupants’ preparation for the activation of the vehicle’s restraint systems, such as airbags.