The unloading station includes {HEAD ~ a door moving mechanism} for moving {TAIL ~ the doors} of the vehicle to the open position upon its arrival at the station 
The unloading station includes { HEAD ~ a door moving mechanism } for moving { TAIL ~ the doors } of the vehicle to the open position upon its arrival at the station
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH