This International Standard defines generic numbering and data structures for unambiguous identification
of equipment used for Intermodal goods transport. These data are known as "Intermodal Goods Transport
Numbering and Data Structures".

This International Standard defines data independently of the data carrier. The modelling of data is based on
Abstract Syntax Notation One (ASN.1) as defined in ISO/IEC 8824. This International Standard excludes any
physical aspects such as interfaces, dimensions etc. Data that form part of transmission or storage protocols
(headers, frame markers and checksums) are excluded.

Data defined in this International Standard require a system for control and distribution of number series
independent of the different AVI/AEI systems. This is required in order to avoid ambiguity and to provide the
necessary level of security where appropriate. For this reason the registration authority defined in ISO 14816
applies for this International Standard.

This International Standard enables the use of optimised encoding schemes such as ASN.1 Packed
Encoding Rules (PER).