Overview
CEN ISO/TS 19321:2024 - Intelligent transport systems (ITS) / Cooperative ITS - defines a dictionary of in-vehicle information (IVI) data structures used to exchange vehicle- and road-related information between ITS stations (ITS‑S). The Technical Specification specifies a general, extensible IVI data model that is split into containers, further organized into data frames and data elements, and described in terms of content and syntax. The standard is communications‑agnostic (it does not define communication protocols) and includes usage scenarios such as real‑time short‑range communications.
Key Topics
- IVI Data Model: A modular, extensible structure split into Management, Location and Application containers to represent diverse IVI content.
- Containers & Structure: Containers hold information; containers are composed of data frames and data elements that describe specific semantics and syntax.
- Location Referencing: Supports both geographic (coordinates) and map‑based referencing for accurate location-based IVI.
- Application Containers: Predefined containers for road configuration, text and layout, automated vehicle info, road surface characteristics, infrastructure support, and general IVI items.
- Data Frames / Elements: Detailed frames (e.g., AbsolutePosition, LaneInformation, RoadSurfaceStatic/DynamicCharacteristics) provide building blocks for messages.
- Extensibility & Interoperability: Designed to accommodate current and future ITS services (contextual speed, road works warnings, vehicle/lane restrictions, hazards, location-based services, re-routing).
- Communications-agnostic: The specification focuses on data semantics and syntax; transport protocols (V2X, DSRC, C-V2X, ITS-G5, IPv6, etc.) are out of scope.
Applications and Users
Practical uses and target audiences include:
- Vehicle OEMs and Tier‑1 suppliers integrating IVI data for HMIs, ADAS and automated driving functions.
- Traffic management centers and ITS service providers exchanging standardized IVI for warnings, road works, and dynamic restrictions.
- Map providers and navigation system vendors who use map-referenced data frames for routing and location-based services.
- Infrastructure operators deploying V2I services and infrastructure support data.
- Software developers and system integrators building interoperable ITS applications and message encoders/decoders.
Use cases:
- Real‑time short‑range hazard warnings between vehicles
- Dissemination of contextual speed and lane restriction data to automated vehicles
- Road surface condition reporting and infrastructure support messages for routing
Related Standards
- Supersedes CEN ISO/TS 19321:2020 (previous edition)
- References to ISO identifiers (e.g., ISO14823 elements) appear in data frames; consult normative references in the specification for protocol and mapping standards.
Keywords: Intelligent transport systems, Cooperative ITS, IVI data structures, ISO/TS 19321:2024, in‑vehicle information, ITS services, data frames, containers, location referencing, V2X interoperability.
