1.1 General This International Standard establishes an AEI system based on radio frequency technologies. This system is intended for general application in RTTT/TICS. It allows the transfer of the identification codes and further information about equipment and vehicles used in intermodal transport into such RTTT/TICS and information systems related to intermodal transport processes. Within the intermodal context of the RTTT/TICS Sector, AEI systems have the specific objective of achieving an unambiguous identification of an ITU or related equipment or vehicle or item used in intermodal transport, and to make that identification automatically. Vehicles will be considered and handled under Intermodal aspects as “Intermodal Equipment”. Therefore, a differentiation between AEI and AVI systems for the purpose of this standard is not required. 1.2 Aim The aim of this International Standard is to define, describe and specify the System Parameters related to an intermodal AEI system to provide an enabling Standard, which, while allowing the system specifier to determine the performance levels and operating conditions, provides a framework for interoperability. Therefore this International Standard specifies a) parameters and requirements of the identification system itself, b) performance criteria necessary to ensure consistent and reliable operation of AEI systems within international transport processing, c) requirements of the performance and the position of the electronic devices (tag) when installed on intermodal equipment, and d) requirements for the installation of readers, and performance data related to these components. These parameters of an AEI system shall be identical, compatible or interoperable world-wide in respect of systems complying to this Standard. Yet it is recognized that, at the implementation level, there may be requirements for regional or operational differences in the performance levels achieved against these parameters.