WHILE DRIVING AT 25 MPH CONSUMER'S VEHICLE WAS CUT OFF BY ANOTHER VEHICLE. THE OTHER VEHICLE MERGED OVER TO THE LEFT LANE AND REALIZED THAT IT WAS A TURNING LANE. THEN, OTHER VEHICLE DETOURED BACK IN TO THE LANE IN FRONT OF CONSUMER'S VEHICLE. CONSUMER'S VEHICLE, AT THAT TIME, COLLIDED INTO THE REAR OF THE OTHER VEHICLE. THE SEAT BELTS WERE WORN, BUT,THE AIR BAGS DID NOT DEPLOY. CONSUMER SUSTAINED RIB AND CHEST INJURIES. *AK