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