a selecting unit to select {TAIL ~ the transport route} which allows articles to be transported from the starting position to {HEAD ~ a designated target position} the fastest as the optimum transport route 
a selecting unit to select { TAIL ~ the transport route } which allows articles to be transported from the starting position to { HEAD ~ a designated target position } the fastest as the optimum transport route
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH