Overview
ISO/TS 21219-7:2017 - TPEG2 Location Referencing Container (TPEG2-LRC) defines how TPEG Generation 2 messages signal the specific location referencing method used to deliver detailed location information in Traffic and Travel Information (TTI) services. The standard specifies the TPEG2-location referencing container (TPEG2-LRC) structure and how it indicates which internal or external location referencing method (e.g., OpenLR, geographic, universal) is in use so client devices (TPEG clients) can interpret location data correctly.
Key Topics
- Scope and purpose
- Signals the location referencing method for all TPEG2 applications that require detailed location data.
- Supports both internal TPEG2 location methods and external methods.
- LRC structure and components
- Defines the LocationReferencingContainer and associated message components such as Method and a set of link types (e.g., DLR1LocationReferenceLink, TMCLocationReferenceLink, KoreanNodeLinkLocationReferenceLink, VICSLinkReferenceLink, ExtendedTMCLocationReferenceLink, GeographicLocationReferenceLink, UniversalLocationReferenceLink, OpenLRLocationReferenceLink).
- Toolkit constraints
- Explains relation to earlier TPEG1-LRC and application identification considerations.
- Physical formats
- Workflows incorporate conversion rules to binary and XML representations (handled in companion parts of the TPEG2 toolkit).
- Client behavior
- Guidance for thin vs. thick TPEG clients on rendering human-readable text or map-referenced navigation cues.
Applications and Who Uses It
- Traffic and travel service providers use TPEG2-LRC to package precise location data for broadcast or network delivery.
- Automotive OEMs, navigation system vendors, and mobile app developers implement the container so decoders can map events to road networks or present human-readable location descriptions.
- Broadcasters and telematics operators rely on standardized LRC signaling to ensure interoperability across different location referencing schemes including OpenLR and geographic referencing.
- ITS integrators and map data providers use the standard to enable dynamic location referencing (for routing, incident management, parking and public-transport info).
Practical benefits include predictable decoder behavior, multi-method location support, and smoother transition from TPEG1 to TPEG2 ecosystems.
Related Standards
Keywords: ISO/TS 21219-7:2017, TPEG2-LRC, TPEG2, location referencing, intelligent transport systems, traffic and travel information, TTI, OpenLR, geographic location referencing.