A safety device (120) for a transportation enclosure (122) has a source (128) of a motive medium mounted on the transportation enclosure. A locking device (124) is also mounted on the transportation enclosure. A line (130) connects the source of the motive medium to the locking device. A device to be locked, also mounted on the transportation enclosure, is selectively engagable by the locking device. A controlling device is in communication with the safety device, either directly with the locking device or indirectly via the source of the motive medium or the line.
