ISO 14816:2005

Overview - ISO 14816:2005 (AVI/AEI numbering and data structure)

ISO 14816:2005 specifies a common, interoperable data structure for unambiguous identification in road transport and traffic telematics (RTTT/ITS). It focuses on numbering and data structure for Automatic Vehicle and Equipment Identification (AVI/AEI) and is deliberately air interface, frequency and physical-interface agnostic. The standard adopts ASN.1 syntax and encoding principles to enable compact, extensible identifiers that can be embedded in On-Board Equipment (OBE) or exchanged between systems.

Key topics and technical requirements

• ASN.1-based data model: Uses ISO/IEC 8824 (ASN.1) UNIVERSAL and APPLICATION class types; an ASN.1 module is provided in Annex B for direct import into application definitions.
• Default encoding: Clause 4 defines a default encoding (optimized for ISO/IEC 8825-2 Packed Encoding Rules, PER) for simple AVI/AEI applications where no other standard applies.
• Core numbering scheme: Defines a compact AVI/AEI numbering construct (including a 56-bit core option) to provide a very large unique identifier space while minimizing storage/transmission overhead.
• Flexible, extendible structure: Supports composite data constructs, “tree and branch” expansions and private structures to accommodate varying RTTT/ITS requirements.
• Residency and interoperability: Data is designed to be media-independent and normally resident in the OBE; the format promotes interoperability across different national and vendor systems when a common protocol exists.
• Coding structures: Several coding structures are defined (e.g., CS1 AVI/AEI numbering, CS2 manufacturer numbering, CS3 validity limitation, CS4 license number, CS5 VIN, CS7 freight container numbering, CS8 tax authority code).
• Administrative rules: Annex A covers management and administration rules (Central Registration Authority) for key coding schemes.

The standard explicitly excludes physical interface specifications, transmission headers/frame markers/checksums, and detailed security protection/classification mechanisms for data elements.

Applications - who uses ISO 14816:2005

ISO 14816 is intended for:

• ITS architects and system integrators designing tolling, roadside enforcement, parking, access control and fleet-management systems.
• OBE and transponder manufacturers implementing compact identification formats.
• Vehicle and container identification workflows (interoperable with VIN, WMI and ISO 6346 container codes).
• Standards bodies, procurement teams and authorities responsible for central registration and identifier administration.

Practical uses include cross-border tolling, automatic vehicle identification, container tracking, tax and customs ID schemes, and any RTTT application requiring compact, interoperable identifiers.

Related standards

• ISO/IEC 8824-1, 8825-1, 8825-2 (ASN.1 and PER)
• ISO 14814 (AVI/AEI reference architecture)
• ISO 3166-1, ISO 3779 (VIN), ISO 3780 (WMI), ISO 6346 (containers), ISO 10374 (container AID)

Keywords: ISO 14816:2005, AVI, AEI, RTTT, ITS, ASN.1, PER, numbering scheme, data structure, automatic vehicle identification, vehicle identification number.