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