Overview
ISO/TS 22726-1:2023 - "Intelligent transport systems - Dynamic data and map database specification for connected and automated driving system applications - Part 1" defines the architecture and logical data model for harmonizing static map data used by connected and automated driving (ADS) systems. The Technical Specification (TS) standardizes a database-oriented model called MHAD (map for highly automated driving) to represent detailed road, lane and road-structure features so ADS applications can access highly confident map data quickly and consistently.
Key topics and technical requirements
- Scope: Specifies the architecture and logical data model of static map data for connected and automated driving applications.
- Architecture: Conceptual system architecture for ITS vehicle stations showing how static MHAD and dynamic information integrate with in-vehicle and roadside sensing.
- Logical data model: Detailed model packages (Transportation and MHAD) covering:
- Road belt network and Lane belt network concepts (belts, side/terminal lines, anchors, joints).
- Road structures and equipment for roadway assets relevant to ADS.
- Overall map model integration with AddressLocation, Cartographic, Service&POI, Transportation and DynamicInformation packages.
- Conformance and testing: Implementations must conform to Clause 7 and pass the abstract test suite in Annex A. UML diagrams follow ISO/IEC 19501 conventions; data types/stereotypes defined in Annex B.
- Annexes and guidance: Informative annexes on MHAD resolution/accuracy (Annex C) and comparison with existing models (Annex D).
- Design rationale: Addresses gaps in ISO 14296 and GDF (ISO 20524-2) for ADS by optimizing for database storage and fast in-vehicle access.
Practical applications and users
ISO/TS 22726-1 is intended for organizations working on connected and automated driving and advanced mapping:
- Automotive OEMs and AD system developers - for consistent high-definition static maps used in vehicle localization, motion planning and control.
- Map data providers and GIS vendors - to harmonize production databases for lane- and carriageway-level features (MHAD).
- Road authorities and infrastructure operators - to standardize asset representations (signs, VMS, road equipment) for cooperative services.
- Telematics/data centers and C-ITS integrators - to exchange and provision static map datasets alongside dynamic traffic/probe data.
Adopting ISO/TS 22726-1 can reduce library and maintenance costs, accelerate map access in vehicles, and improve interoperability between map makers, service providers and ADS applications.
Related standards
- ISO 14296 - Navigation and cooperative ITS logical data model (background)
- ISO 20524-2 (GDF 5.1) - Map data exchange model (comparison)
- ISO/IEC 19501 - UML specification (diagram conformance)
- ISO/TS 22726-2 - DynamicInformation package (companion part under preparation)