{HEAD ~ 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 {TAIL ~ errors} at a stop position, and the number of article transfers 
{ HEAD ~ 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 { TAIL ~ errors } at a stop position , and the number of article transfers
HEAD HEAD HEAD HEAD HEAD 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 TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH