I HIT A TRUCK AT AN INTERSCTION AT 55. I DID NOT SEE HIM. I WAS ALONE, AND DID NOT SEE THE TRUCK SOON ENOUGH. MY DRIVER'S AIR BAG DEPLOYED, BUT DID NOT INFLATE. THE PARA-MEDIC WHO REACHED ME FIRST NOTED THAT THE BAG HAD NOT INFLATED. THEY ARRIVED IN 5 MINUTES. THE PASSENGER SIDE DID INFLATE. I SUFFERED SEVERE BRUISING AND BROKEN RIBS AND HIT THE STEERING WHEEL. MY INSURANCE COMPANY ASKED ME TO REPORT THIS INCIDENT. *AK