In {HEAD ~ the open position}, the doors are located to facilitate removal of the freight from {TAIL ~ the vehicle} 
In { HEAD ~ the open position } , the doors are located to facilitate removal of the freight from { TAIL ~ the vehicle }
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL