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