A VEHICLE WAS STOPPED IN FRONT OF ME AND I REAR ENDED THEM. I WAS GOING AROUND 44-55 MPH. AFTER I HIT THE OTHER CAR FROM BEHIND I CROSSED 2 LANES OF TRAFFIC AND WENT THRU A PRETTY DEEP DITCH. THE AIR BAGS DID NOT DEPLOY AT ALL. I SUSTAINED A CONCUSSION., SEVERAL HEAD LACERATIONS AND A FRACTURED LUMBAR SPINE.