{HEAD ~ The lowered position} is for {TAIL ~ long distance haulage} of the trailer in order to achieve fuel economy 
is for
{ HEAD ~ The lowered position } is for { TAIL ~ long distance haulage } of the trailer in order to achieve fuel economy
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH