Overview
ISO 15784-1:2008 defines the general principles and documentation framework for application profiles used in Intelligent Transport Systems (ITS) data exchange involving roadside modules. It explains how to create concise, consistent application profiles that specify how base standards are combined to support data and message exchange between a traffic management centre and roadside units (and between roadside modules themselves). The part explicitly excludes communication with on‑board units, in‑vehicle systems, in‑cabinet communication and motion video transmission.
Key topics and technical requirements
- Application profiles concept: Profiles combine and constrain base standards by selecting options, parameter ranges and conformance rules to deliver specific ITS functionality.
- Profile elements: Each profile should include scope, applicable scenarios, normative references, specification of base standards and chosen options, and explicit conformance statements.
- Conformance rules: Profiles may make base‑standard options mandatory, conditional, optional or prohibited. Conformance to a profile implies conformance to the referenced base standards.
- OSI layering focus: Application profiles address the higher OSI layers (application, presentation, session - layers 5–7) while leaving lower‑layer transport profiles to be defined, often at national level.
- Documentation and format: Profiles must be concise, reference base standards (not duplicate them), be consistent with other profiles, and follow drafting rules (see Annex A).
- Normative references and related technologies: The standard references ISO/IEC TR 10000 (profile framework/taxonomy), and examples/terminology include ASN.1, BER, TCP/UDP and NTCIP concepts used in ITS messaging.
Applications and who uses it
- Traffic authorities and operators: Define interoperable interfaces between traffic management centres and roadside equipment (e.g., signal controllers, dynamic message signs, vehicle detectors).
- Systems integrators and vendors: Produce compliant roadside modules and centre software by following profile constraints to ensure interoperability and conformance.
- Standards developers and test houses: Create standardized application profiles (multi‑part profiles) and conformance test suites.
- Project managers and engineers: Use the documentation framework to select appropriate base standards, set options, and document the intended message/data exchange scenarios.
Practical value
- Promotes interoperability across diverse roadside devices and national communication infrastructures.
- Enables modular standards adoption: international application profiles combined with country‑specific lower‑layer profiles.
- Provides a structured approach to conformance and profile documentation, reducing integration risk in ITS deployments.
Related standards
- ISO/IEC TR 10000‑1 and 10000‑2 (profile framework and taxonomy)
- ISO 15784‑3 (AP‑DATEX - application profile for data exchange)
- NTCIP 8003 (US profile framework reference)
- ASN.1 / BER (ISO 8824 / ISO 8825) and transport protocols (TCP RFC 793, UDP RFC 768)
Keywords: ISO 15784-1:2008, intelligent transport systems, ITS, application profiles, roadside modules, traffic management centre, data exchange, interoperability.
Open preview (PDF)Intelligent transport systems (ITS) — Data exchange involving roadside modules communication — Part 1: General principles and documentation framework of application profiles