Overview
ISO/TR 25100:2012 - "Intelligent transport systems - Systems architecture - Harmonization of ITS data concepts" - is a Technical Report from ISO/TC 204 that provides guidance on harmonising data concepts used in Intelligent Transport Systems (ITS). It describes processes, challenges and recommended practices for aligning definitions in data registries and data dictionaries (for example those described in ISO 14817:2002). As an informative (non‑normative) report, ISO/TR 25100:2012 helps organisations arrive at preferred definitions for use in formal standards, specifications and information models to reduce duplication and improve clarity.
Key topics
- Purpose and scope: Guidance for harmonisation of data concepts managed by metadata registries and dictionaries.
- Background issues (Clause 3): Problems addressed include proprietary data concepts, semantic differences, structural differences (e.g., XML representations), and difficulty of reuse.
- Harmonisation concepts (Clause 4): Definitions and principles for reconciling semantic, structural and syntactic differences; benefits and challenges of harmonisation versus pure interoperability.
- Harmonisation processes: Describes workflows and steps to reach preferred definitions (including investigation, mapping and reconciliation phases).
- Current approaches (Clause 5): Reviews four harmonisation approaches, examples such as ISO 14817, ISO/IEC 20943, UN/CEFACT TBG17 and core component methods, and practical registry work (e.g., metadata registries).
- Guidance for designers (Clause 6): Advice for data specification designers whether or not core components exist in a registry.
- Practical recommendations and conclusions (Clauses 7–8) on improving efficiency and reducing duplication in ITS and transport/logistics systems.
Applications and users
ISO/TR 25100:2012 is useful to:
- Standards developers and working groups creating ITS data specifications and information models.
- ITS architects and system designers seeking consistent data semantics across systems.
- Data modelers, registry maintainers and metadata librarians managing dictionaries and core components.
- Transport agencies, operators and vendors implementing ITS services who need to harmonise existing proprietary data with open registries.
Practical uses include reducing ad‑hoc interface mapping, improving re‑use of data concepts, streamlining interoperability efforts and guiding harmonisation decisions in transport and logistics projects.
Related standards
- ISO 14817:2002 (metadata registries / data dictionaries)
- ISO 24531 (XML usage in ITS - structural guidance)
- ISO 14813‑6 (ASN.1 representation reference)
- ISO/IEC 20943, UN/CEFACT TBG17 and Core Components Technical Specification (CCTS) - referenced harmonisation approaches
Keywords: ISO/TR 25100:2012, Intelligent Transport Systems, ITS data harmonisation, data registry, data dictionary, metadata registry, semantic harmonisation, transport and logistics.