Ford's patented "K-bag" technology, available in the 2009 F-150, is a new front seat-mounted dual-chamber side air bag named for its unique shape. It is designed to help protect the rib cage from excessive crash forces during a side impact.

This air bag is supported with a state-of-the-art side crash sensing system that uses pressure pulses from the impact to deploy the air bag 30 percent faster than a conventional system.

The 2009 Ford F-150 earned the Insurance Institute for Highway Safety's "Top Safety Pick" last November and quadruple 5-star government crash test ratings in January.