{HEAD ~ The end supports} can allow the extended barrier member to move in a direction transverse to {TAIL ~ the width} of the barrier member when desired 
{ HEAD ~ The end supports } can allow the extended barrier member to move in a direction transverse to { TAIL ~ the width } of the barrier member when desired
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH