MY SPOUSE WAS DRIVING DOWN S/B ON RT 313 @ RT 290 MARYLAND. HE HIT A DEER AND ROLLED MY ENVOY AND THE AIR BAGS NEVER DEPLOYED. MY SON WAS IN FRONT PASSAGER SET WITH A SET BELT ON AND WHEN THE ENVOY ROLLED HIS SET BELT DID NOT HOLD HIM ON. MY SPOUSE TOLD ME THE ANIT-LOCK BREAKS DID NOT ENGAGE WHEN HE SLAM ON THE BREAKS .