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