Overview
ISO/TS 20452:2007 provides functional requirements and a Logical Data Model (LDM) for a Physical Storage Format (PSF) and an Application Program Interface (API) used in Intelligent Transport Systems (ITS) database technology. Published as a Technical Specification, it consolidates internationally gathered requirements for navigation map data and related information. ISO/TS 20452:2007 defines the logical data organization for PSF but does not specify a Physical Data Organization (PDO) or a single on-media format.
Key topics and technical requirements
- Application categories: The specification organizes functionality into six core navigation application categories - Positioning, Route Planning, Route Guidance, Map Display, Address Location, and Services/POI Information Access.
- Logical Data Model: Covers high-level entities and relationships such as transportation entities, address location entities, service/POI entities, cartographic entities, and dynamic traffic information.
- API scope: Defines the role of an Application Program Interface (API) as the interface between application software and data access libraries used in vehicle navigation systems.
- Logical Data Organization (LDO): Recommends a layered, level-based organization for map data to support different application needs (global architecture, detailed road/background data, map display levels, route planning, address location, service data, traffic information, and metadata).
- Data modeling conventions: Includes terminology, syntax notation for data model diagrams, and definitions for concepts like links, nodes, multilinks, cartographic features, geocoding, and landmarks.
- Interoperability focus: Emphasizes consolidation of market-driven requirements to enable cross-vendor compatibility without prescribing the physical on-media layout.
Practical applications and users
Who benefits:
- In-vehicle navigation system developers - use the LDM and API guidance to design data access layers and runtime behavior.
- Map data providers and aggregators - align logical organization and entity definitions to improve dataset compatibility.
- Telematics and location-based service (LBS) architects - adapt logical structures for routing, display, and geocoding services.
- ITS system integrators and OEMs - leverage the specification to shorten development time and support multi-source navigation media.
Practical value:
- Facilitates interoperable map databases and consistent application behavior across platforms.
- Provides a blueprint for building navigation data architectures that reduce time-to-market for navigation and LBS products.
- Supports modular data layering for efficient map display, routing, and traffic updates.
Related standards
- ISO 14825 - Geographic Data Files (GDF): referenced as a normative standard for geographic data content and compatibility with ISO/TS 20452:2007.
Keywords: ISO/TS 20452:2007, Physical Storage Format, PSF, Application Program Interface, API, Logical Data Model, Logical Data Organization, Intelligent Transport Systems, ITS, navigation map data, map database, ISO 14825.
Open preview (PDF)Requirements and Logical Data Model for a Physical Storage Format (PSF) and an Application Program Interface (API) and Logical Data Organization for PSF used in Intelligent Transport Systems (ITS) Database Technology
