1.1 This International Standard sets out the basic requirements for the specification and testing of air/surface (intermodal) containers for general cargo, which are suitable for international exchange and for conveyance by road, rail and sea as well as by freighter versions of high capacity fixed-wing aircraft, including interchange between these modes of transport. 1.2 The coding, identification and marking of these containers shall be in accordance with ISO 6346. To denote the container as an air/surface (intermodal) container, the symbol illustrated in figure 1 shall be located at the top left-hand corner of the end walls and side walls and, as appropriate, on the roof, complying with the requirements of ISO 6346 (see annex B.3 of this International Standard). NOTE - If any other markings are used on the container, they shall in no way interfere with the location of the marks required by ISO 6346. 1.3 The container types covered by this International Standard are : Type Marking code identification Air/surface intermodal (general cargo) 90 to 99 : Fixed wing