Overview
ISO/TS 22741-2:2024 - Intelligent transport systems - Roadside modules AP‑DATEX data interface - Part 2: Generalised field device basic management - defines core management concepts and data needs for roadside field devices in ITS. The technical specification identifies basic user needs for managing devices such as traffic signals, variable message signs, weather stations, traffic sensors and other roadside equipment used in connected ITS (C‑ITS) environments. It traces those needs to interoperable data designs to support device identification, capability discovery and status monitoring.
Key topics and requirements
This document frames a generalised management interface for field devices and covers architecture, data exchange and security considerations. Key topics include:
- Architecture views: functional, physical and communications views of the AP‑DATEX data interface, plus security and data protection considerations.
- Conformance & terminology: conformance clauses, normative references, terms and abbreviated terms to ensure consistent implementation.
- User needs: monitoring and control needs such as device identification, capability reporting, status monitoring, and single‑value I/O control.
- Cabinet and environmental monitoring: standardized data concepts for cabinet doors, fans, heaters, humidity, temperature and related design constraints.
- Power monitoring: AC power, battery, generator, solar and wind power data exchange requirements and capability descriptions.
- I/O and device capabilities: general‑purpose I/O definitions, data exchange requirements and capability statements to support diverse field equipment.
- Security: identification of security vulnerabilities and requirements for secure data exchange and device management.
Applications and who uses it
ISO/TS 22741-2:2024 is practical for organizations that design, deploy or operate ITS roadside equipment:
- Field device manufacturers - to provide interoperable management interfaces and capability metadata.
- Systems integrators and software vendors - to implement AP‑DATEX-based device managers and central systems.
- Traffic authorities and municipalities - for remote monitoring, asset management, fault detection and power/environmental monitoring.
- C‑ITS deployments - to ensure roadside modules can interoperate with central managers and connected vehicles.
- Procurement and testing teams - to specify conformance criteria for field device behaviour and data exchange.
Practical benefits include improved interoperability, standardized device discovery and status reporting, easier remote diagnostics and more consistent power/environmental monitoring.
Related standards
- ISO/TS 22741‑1 - provides context on how the ISO 22741 series relates to the overall ITS architecture.
- AP‑DATEX data interface (series) - the broader interface family for roadside module data exchange and interoperability.