ISO 14827-3:2019

Overview

ISO 14827-3:2019 - Transport information and control systems - Part 3: Data interfaces between centres for intelligent transport systems (ITS) using XML (Profile A) - defines a Platform Specific Model (PSM) for XML-based data exchange between ITS centres. The standard specifies message rules and procedures to package end-application messages, request and deliver data between suppliers and clients, and manage sessions where a system can act as both client and supplier. It targets centre-to-centre communication interfaces and prescribes how to use common transport protocols without re-defining lower-layer packet exchange.

Key Topics and Requirements

• Message paradigms: Defines two primary exchange methods - Push (subscription/publication/receipt) and Pull (with or without SOAP).
• SOAP usage: SOAP is mandatory for Push exchanges; optional for Pull.
• Profile A (XML tag profile): Profile A is defined in this part and assumes interoperability with NTCIP 2306. Only Profile A is specified here; additional profiles will be added in later ISO 14827 parts.
• Message structure rules: XML messages must include XML version/encoding, a SOAP envelope with header and body, and follow prescribed subscription, publication and receipt structures.
• Functional Exchange Profile (FEP): Annex A provides a FEP - a selection of exchange features to implement.
• Supporting normative annexes: Annex B (XML tag scripts), Annex C (protocol usage methods), Annex D (informative message structures).
• Conformance: No explicit tests are defined; conformance is achieved when exchanged data conform to the messaging rules in the document.
• Scope exclusions: Lower-layer packet rules and specific end-application data definitions are out of scope.

Applications and Who Uses It

ISO 14827-3:2019 is intended for:

• ITS system architects and integrators designing centre-to-centre interfaces
• Traffic management centres, control centres, and data publishers/consumers in public and private sectors
• Software developers implementing XML/SOAP message handlers and session management
• Vendors ensuring interoperability with NTCIP 2306-aware centres

Practical uses include real-time traffic data subscriptions, event-driven alerts, periodic data publication, and standardized client/supplier interactions across heterogeneous ITS networks.

Related Standards

• ISO 14827-1: fundamental message requirements (PIM)
• ISO 14827-2: ASN.1-based PSM (note: ASN.1 formats are not compatible with the XML formats in Part 3)
• NTCIP 2306: referenced for XML message encoding and transport; Profile A assumes interconnection compatibility

Keywords: ISO 14827-3:2019, transport information and control systems, ITS, XML data interfaces, Push/Pull messaging, SOAP, Profile A, NTCIP 2306, Functional Exchange Profile (FEP)