See also:

Distance control assist operation
Always pay attention to the operation of the vehicle and be ready to manually decelerate to maintain the proper following distance. The Distance Control Assist (DCA) system may not be able to decele ...

Safety
As of this writing, the 2011 QX56 hasn't been crash-tested. Standard safety features include front and side-impact airbags, side-curtain airbags for all three rows, an electronic stability system ...

Traction AA, A, B and C
The traction grades, from highest to lowest, are AA, A, B and C. Those grades represent the tire’s ability to stop on wet pavement as measured under controlled conditions on specified governme ...