Rubber tired vehicle wheel guide

Claim 1

IN A RAILROAD FLAT CAR FOR TRANSPORTING TRAILERS PIGGYBACK FASHION, TRACK STRUCTURE ON THE FLAT CAR FOR GUIDING RUBBER TIRES OF THE TRAILER ALONG A PRE-DETERMINED PATHWAY WHICH EXTENDS LONGITUDINALLY OF THE FLAT CAR, THE TRACK STRUCTURE COMPRISING, IN COMBINATION: A PAIR OF WIDTHWISE SPACED-APART SMOOTH PLATES EXTENDING ALONG THE PATHWAY ON THE FLAT CAR AND PROVIDING A SUPPORT SURFACE FOR TIRES OF THE TRAILER, MEANS ON THE FLAT CAR FOR SPRINKLING WATER UPON SAID PLATES TO REDUCE THE COEFFICIENT OF FRICTION BETWEEN SAID PLATES AND THE TIRES, MEANS FOR SUBSTANTIALLY CONTINUOUSLY ENGAGING AT LEAST TWO OPPOSED SIDE WALLS OF THE TIRES TO GUIDE THE TIRES ALONG THE PATHWAY; SAID LASTNAMED MEANS COMPRISING, A FIRST SERIES OF AXIALLY-SERIALLY ALIGNED ROLLERS AND A SECOND SERIES OF AXIALLY-SERIALLY ALIGNED ROLLERS, EACH OF SAID ROLLERS BEING OF A LENGTH THAT IS SUBSTANTIALLY LESS THAN THE DIAMETER OF A GUIDED TIRE, AND MEANS SUPPORTING EACH OF SAID SERIES OF ROLLERS ALONG EDGE PORTIONS OF SAID SMOOTH PLATESIN A POSITION SUCH THAT ROLLERS OF EACH OF SAID SERIES ENGAGE OPPOSED SIDE WALLS OF TRAILER TIRES PASSING ALONG THE PATHWAY.