{HEAD ~ Each} of {TAIL ~ guided vehicles} has an operating condition memory unit for storing the total travel distance, the travel time, the number of travels, the number of errors at a stop position, and the number of article transfers 
of
{ HEAD ~ Each } of { TAIL ~ guided vehicles } has an operating condition memory unit for storing the total travel distance , the travel time , the number of travels , the number of errors at a stop position , and the number of article transfers
HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH