ISO/TS 24530-2:2006 PDF

Overview

ISO/TS 24530-2:2006 defines tpeg-locML, the XML encoding for Location Referencing used by TPEG (Transport Protocol Experts Group) Traffic and Travel Information (TTI) applications. The Technical Specification specifies how location data is represented in tpegML so that service providers can deliver both machine-readable location references and human-understandable descriptions within a single TPEG application. The goal is language-independent, interoperable location information that enables client decoders and “thick” clients (for example navigation systems) to map-match and present events accurately on digital maps.

Key Topics and Requirements

• XML encoding of location referencing: tpeg-locML elements such as location_container, location_coordinates, location_point, and location_descriptions are defined in the accompanying DTD (tpeg-locML.dtd).
• Language independence: Uses tpeg-loc tables and external entity references (e.g., loc01_x, loc05_x, loc41_x) to supply language-neutral, word-oriented data object dictionaries that can be replaced with localized entity files.
• Machine- and human-readable data: Combines coordinate-based data (e.g., WGS84) with descriptive descriptors so client decoders can both map-match and render understandable messages for end users.
• Mode-specific descriptions: Elements like mode_type_list and mode_of_transport (based on loc05 table entries) allow location references to be scoped by transport mode (road, rail, bus, etc.).
• Formal structure: The specification includes normative DTD and external entity files (Annex A and B) and guidance on attribute usage and table mappings.
• Interoperability: Intended to be deployable across diverse bearers (DAB, DVB, ARIB, ATSC, Internet) with minimal adaptation.

Applications and Who Uses It

• TTI service providers and broadcasters: To produce standardized TPEG messages containing precise location references for traffic and travel alerts.
• Navigation and map vendors: To implement map-matching and display events (road incidents, PTI, RTM) using WGS84 coordinates and descriptive metadata.
• ITS developers and integrators: For interoperable exchange of location data in traffic management, fleet systems, and multimodal traveler information services.
• Software vendors building TPEG decoders: To parse tpeg-locML, resolve entity tables, and render localized user messages.

Related Standards

• ISO/TS 24530-1 (tpegML common data types)
• ISO/TS 24530-3 (tpeg-rtmML)
• ISO/TS 24530-4 (tpeg-ptiML)
• ISO/TS 18234 series (TPEG data-streams and Location Referencing for applications)
• ISO 3166-1 (country codes)

Keywords: ISO/TS 24530-2, tpeg-locML, TPEG, XML, Location Referencing, TTI, traffic and travel information, tpegML, DTD, WGS84, entity references, mode_of_transport.