I ENTERED THE INTERSECTION AFTER STOPPING AT THE STOP SIGN. I WAS HALFWAY THROUGH THE DIVIDED INTERSECTION THAT HAD A ROAD CLOSED SIGN FOR THE EXIT SIDE OF THE INTERSECTION AND A DO NOT ENTER SIGN FOR THE ENTRANCE SIDE. THE MEDIAN WAS OVER GROWN WITH VEGETATION SO THAT VISIBILITY WAS POOR. I STARTED ACROSS THE INTERSECTION AND ABOUT HALF WAY THROUGH A CAR ENTERING AT FAST RATE OF SPEED HIT THE FRONT OF MY TRUCK KNOCKING TO THE LEFT. THE AIRBAG DEPLOYED AND I WAS THROWN TO THE RIGHT AND THE ENGINE WENT TO FULL SPEED. THE TRUCK HIT A PALM TREE.