I WAS STOPPED AT A RED LIGHT, CONSTRUCTION TRUCK RAN INTO BACK OF MY 2006 FORD EXPEDITION. THE IMPACT PUSHED ME 20 FEET INTO THE VEHICLE IN FRONT OF ME, SANDWICHING MY VEHICLE IN BETWEEN THE OTHER TWO; THE IMPACT FIRST THREW ME BACK THEN FORWARD & SENT MY GLASSES OFF MY HEAD BUT THE AIRBAG DID NOT DEPLOY. I GOT A CONCUSSION & SHOULDER INJURY DUE TO FORCE. POLICE & MEDICAL PERSONS WERE AMAZED THAT AIRBAG DID NOT DEPLOY. VEHICLE HAD FRONT END & REAR DAMAGE, WAS UNDRIVEABLE & HAD TO BE TOWED AWAY. I AM WAITING TO FIND OUT IF IT WILL BE TOTALED OUT.