Overview
CEN ISO/TS 18234-1:2013 (TPEG1-INV) is the introductory Technical Specification for the TPEG Generation 1 (TPEG1) binary data format used for Traffic and Travel Information (TTI). It provides an index to the complete TPEG1 toolkit, explains numbering and versioning, and defines the Application Identification (AID) scheme that allows new TPEG applications to be indexed and managed as the TPEG family grows. Published in 2013 (second edition), this document supersedes the 2006 edition and forms the entry point for implementers using TPEG1 binary streams.
Key topics and technical requirements
- Application Identification (AID): Defines how TPEG applications are uniquely identified so receivers can recognise and process different TPEG services.
- Indexing and Versioning: Establishes numbering, naming and version-control rules for the set of TPEG1 parts and editorial updates; the current technical version is TPEG-INV/004.
- Scope of the toolkit: Acts as the index to the other TPEG1 parts (e.g., SSF, SNI, RTM, PTI, LRC, PKI, CTT, TEC, CAI, LRC) and clarifies inter-working and dependencies among them.
- Byte‑oriented binary format context: Describes TPEG’s byte-oriented data stream approach and its adaptability to different digital bearers (broadcast, IP, etc.).
- References and normative links: Identifies normative documents required for implementation, notably ISO/TS 18234 parts and ISO 17572 location-referencing standards.
- Implementation guidance: Notes use of UML modelling and automated tooling for application development and indicates where profiles or combinations of applications (for example, pairing TPEG1-TEC with specific LRC profiles) must be observed.
Applications and practical value
- Enables interoperable distribution of traffic and travel messages from service providers to end‑user devices (in-vehicle systems, mobile apps, broadcasting systems).
- Supports broadcasters, digital radio/IP stream operators and ITS service platforms to package and version TTI services consistently.
- Helps device manufacturers, navigation providers and traffic data aggregators implement correct decoding, filtering and presentation of TPEG messages across multiple languages and delivery bearers.
- Facilitates evolution: new TPEG applications can be added while maintaining consistent identification and backward compatibility.
Who should use this standard
- ITS system architects and service providers designing TTI services
- Broadcasters and streaming platforms delivering traffic data
- Navigation and telematics device manufacturers
- Software developers building TPEG encoders/decoders and middleware
- Standards architects and test labs validating TPEG1 conformance
Related standards
- ISO/TS 18234 series (Parts 2–11: SSF, SNI, RTM, PTI, LOC/LRC, PKI, CTT, TEC, CAI, LRC)
- ISO 17572 (location referencing for geographic databases)
Keywords: TPEG, TPEG1, ISO/TS 18234-1, traffic and travel information, TTI, binary data format, Application Identification (AID), TPEG-LRC, ITS.
