Special box to carry freight, strengthened and stackable and allowing horizontal or vertical transfers.
A more formal technical definition of a container is:
Article of transport equipment which is:
a) of a permanent character and accordingly strong enough to be suitable for repeated use
b) specially designed to facilitate the carriage of goods, by one or more modes of transport, without intermediate reloading
c) fitted with devices permitting its ready handling, particularly its transfer from one mode of transport to another
d) so designed as to be easy to fill and empty
e) stackable and
f) having an internal volume of 1 m³ or more.
Swap bodies are excluded.
Flat containers are included. Although without internal volume, and therefore not satisfying criterion f) above, flats used in maritime transport should be considered to be a special type of container and therefore are included here.
A flat container is a loadable platform having no superstructure whatever but having the same length and width as the base of a container and equipped with top and bottom corner fittings.