This invention is of interest in {HEAD ~ the field} of {TAIL ~ the guidance} of public transport road vehicles by a rail 
of
This invention is of interest in { HEAD ~ the field } of { TAIL ~ the guidance } of public transport road vehicles by a rail
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH