Overview
ISO/TS 19321:2024 - Intelligent transport systems - Cooperative ITS - Dictionary of in-vehicle information (IVI) data structures defines a general, extensible set of in-vehicle information (IVI) data structures for exchanging IVI between ITS stations (ITS‑S). The technical specification standardizes how contextual information (e.g., contextual speed, road works, vehicle and lane restrictions, hazards, location‑based services, re‑routing) is organized into containers, data frames and data elements. The data structures are specified as communications‑agnostic (the document does not define transport or protocol layers) and includes usage scenarios such as real‑time short‑range communications.
Key topics and technical requirements
- Structural model: a general model split into conceptual zones to accommodate current and extensible IVI content.
- Location referencing: supports both geographic and map‑based location referencing for precise IVI exchange.
- IVI Containers: predefined container types including Management, Location (Geographic/Map), and Application containers (General IVI, Road Configuration, Text, Layout, Automated Vehicle, Road Surface, Infrastructure Support, etc.).
- Data frames and elements: detailed descriptions of frames such as AbsolutePosition, Segment, LaneInformation, RoadSurfaceDynamicCharacteristics and numerous data elements that define content and syntax.
- Communications‑agnostic design: structures meant for use over multiple transport protocols - the specification does not mandate communication protocols.
- Usage scenarios: examples for real‑time, short‑range use cases and other ITS service contexts.
Applications
ISO/TS 19321:2024 is intended to harmonize IVI content exchange across ITS ecosystems to support interoperable Cooperative ITS services:
- Real‑time driver information and warnings (hazards, road works, speed context).
- Vehicle‑to‑infrastructure and vehicle‑to‑vehicle IVI exchange for lane/vehicle restrictions and re‑routing.
- Map providers and navigation services integrating standardized IVI content.
- Automated driving and platooning support where vehicle characteristics and rules are shared.
- Traffic management centers and road authorities distributing authoritative IVI.
Who will use this standard
- Automotive OEMs and Tier‑1 suppliers (IVI/ADAS systems)
- ITS system architects and integrators
- Map and location data providers
- Road operators and traffic management authorities
- App developers and service providers building cooperative ITS services
Related standards
The document references data elements and coding concepts that align with other ITS standards (e.g., ISO references such as ISO 14823 appear in the data frames). Because ISO/TS 19321 is communications‑agnostic, it is commonly used together with protocol and transport standards when implementing complete Cooperative ITS solutions.
Keywords: ISO/TS 19321:2024, Cooperative ITS, IVI data structures, in‑vehicle information, ITS services, location referencing, IVI containers, data frames, data elements, communications‑agnostic.