OUR VEHICLE WAS TRAVELING ON PAVED HIGHWAY JUST SOUTH OF WAUKOMIS, OK, AT APPROX. 6:45AM. A PICKUP PULLING A STOCK TRAILER WAS TRAVELING SOUTH AND CROSSED OVER IN FRONT OF OUR DRIVER'S VEHICLE, AND TO AVOID A HEAD-ON COLLISION WITH THIS VEHICLE, OUR DRIVER TOOK TO THE BAR DITCH AND AS A RESULT HIT A ROAD SIGN POST AND ALSO HIT A 3" STEEL POST THAT WAS SET APPROX. 3 FOOT DEEP IN CONCRETE, THE IMPACT WAS DEAD CENTER ON THE FRONT END OF OUR TRUCK'S BUMPER, AND IT TOTALED OUR VEHICLE. THE AIRBAGS DID NOT DEPLOY ON OUR VEHICLE. OUR DRIVER FORTUNATELY WAS NOT INJURED. MY QUESTION IS WHY DID THE AIRBAGS NOT DEPLOY? *NM