Overview
CEN ISO/TS 24530-1:2006 defines an XML-based representation of Traffic and Travel Information (TTI) messages known as tpegML. Its primary purpose is to establish the top-level XML “containers” and a set of common data types used across TPEG XML applications (for example, tpeg-ptiML). tpegML is designed to map the existing TPEG binary format (ISO/TS 18234 series) while adding XML tags that create message and message-set structures suitable for internet file delivery and multi‑bearer distribution.
Key Topics
- Top-level containers and structure
- Definitions for tpeg_document, tpeg_message_set and tpeg_message to package TTI content for file or feed delivery.
- Common data types
- Standardized XML data types such as time, day_mask, numeric and string types (examples in the specification include time, intunti, intsiti, numag, short_string, long_string).
- DTD support
- Normative DTDs provided (tpegMLDataTypes.dtd and tpegML.dtd) to validate tpegML instances.
- Mapping to TPEG binary
- tpegML is explicitly designed to map to the TPEG binary model (ISO/TS 18234 series) to maintain semantic compatibility with established TPEG applications.
- Internationalization and language entities
- Use of DTD and language entity files to enable multi‑language rendering of messages in internet browsers.
- Message metadata
- Elements such as originator and summary to support provenance and human-readable overviews.
- Extensions
- Annex guidance for future DTD extensions and multimedia support for richer message content.
Applications
- Traffic data providers and service operators
- Use tpegML to generate, exchange and publish standardized TTI messages across different distribution channels (Internet, DAB, DVB, ARIB, ATSC).
- Navigation and infotainment developers
- Ingest tpegML feeds to display traffic alerts, travel updates, and multimodal service information in in-vehicle systems and mobile apps.
- Traffic management centres & ITS integrators
- Exchange structured event/status information across systems and between organizations with consistent data types and provenance.
- Broadcasters & content aggregators
- Package TPEG content for carousel or file delivery while preserving compatibility with existing TPEG binary consumers.
Related Standards
This specification is essential for anyone implementing interoperable, bearer‑independent Traffic and Travel Information services using XML and for ensuring compatibility with the TPEG ecosystem. Keywords: TPEG, tpegML, XML, TTI, ISO/TS 24530-1:2006, DTD, traffic information, TPEG binary.