ISO/TS 20452:2007 PDF

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.