A trailer body that can easily be detached from a truck chassis for loading onto a vessel, a rail car, or stacked in a container depot. A container may be varied in length and width. Containers may be ventilated, refrigerated, insulated, vehicle rack, flat rack, open top, bulk liquid or equipped with interior devices.

Alternatively:

Putting goods into a standardised unit that can be handled by mechanised and frequently automated equipment.

As submitted by John-Ivar Christensen - Uniteam International