Abstract: A locking arrangement for a bulkhead door in a freight transport vehicle in which locking plates are selectively positioned along tracks on each side of the vehicle floor, and are engaged by locking pins in the bulkhead door. A locking track is mounted in the transport vehicle floor along each side thereof, and extends along a substantial portion of the length of the vehicle. Each track consists of an elongated, rectangularly-shaped steel plate positioned to extend along a longitudinal side of the vehicle, and has a number of vertically-extending holes formed therein and spaced along its length. Each locking plate has a relatively short length in comparison to a locking track, and has several posts extending vertically downwardly from its bottom to engage the holes in a locking track.