WHILE COMING TO A STOP AND THE INTERSECTION OF LONGSTREET AND HIGHWAY 82. I PRESSED ON THE BRAKE PEDDLE AND THE BRAKES LOCKED UP AND I SLED THROUGH THE INTERSECTION INTO A DITCH. I WAS TRAVELING THE SPEED LIMIT OF 50 MPH. THE PASSENGER AIR BAG DEPLOYED BUT THE DRIVERS DID NOT DEPLOY. I HAVE A BROKEN NOSE FROM HITTING STEERING WHEEL. SEAT BELTS WERE ON FRONT SEAT DRIVER AND PASSENGER.