ISO 19082:2025 PDF

Overview

ISO 19082:2025 - Intelligent transport systems - Definition of data elements and data frames between roadside modules and signal controllers for cooperative signal control - defines the application‑layer data elements and data frames used for cooperative signal control. The standard specifies message content for communications between roadside modules, signal controllers, and traffic management centres and covers both macroscopic and micro (local) signal control use cases. This first edition updates ASN.1 modules, clarifies referenced data elements, and adds an architecture reference model.

Key topics and technical requirements

• Application-layer scope (OSI): Data definitions apply to the application layer; lower-layer transport is out of scope but typical usage is over IP (UDP/TCP).
• Data elements and frames (Clause 7): Structured definitions (name, OID, definition, data type) follow ISO 14817‑1; conformance requires using the data types described in Clause 7.
• ASN.1 modules (Annex A): Concrete encoding modules are provided for interoperable message encoding.
• Use cases: Macroscopic (centralized adaptive control) and micro (local/roadside) cooperative signal control scenarios are described, including how processed probe data and detector inputs are used.
• Security and transport: Messages are generally exchanged over IP networks (UDP/IP, TCP/IP); IPsec, DTLS, TLS are noted as security options.
• Data models and relationships: Informative Annex B provides the data model; Annex C maps relationships to existing standards such as PRESTO (ISO 22951).

Practical applications and users

ISO 19082:2025 is intended for practitioners implementing cooperative signal control and ITS communications:

• Traffic management centres and operators implementing adaptive or coordinated signal control
• Roadside module and signal controller manufacturers creating interoperable message interfaces
• ITS integrators and systems engineers designing data exchanges for probe data, flow rates, queue length, and processed statistics
• Municipalities, transport planners, and consultants specifying procurement requirements for connected traffic signal infrastructure

Typical applications:

• Exchanging processed vehicle probe data and detector-derived statistics from roadside modules to central controllers
• Sending optimized timing parameters (cycle, split, offset) from traffic management centres to signal controllers
• Local cooperative control where roadside modules and controllers coordinate directly for real‑time signal adjustments

Related standards

• ISO 14817‑1 (ITS data dictionary framework)
• ISO 22951 (PRESTO - pre-emption and priority)
• ISO 21217, ISO 17419, ISO 17423, ISO 17429, ISO 24102‑6 (ITS architecture & communication profiles)
• ISO 10711 and SAE J2735 (related message sets and interfaces)

Keywords: ISO 19082, intelligent transport systems, cooperative signal control, data elements, data frames, signal controllers, roadside modules, traffic management centres, ASN.1, probe data.