ISO 17423:2018

Overview

ISO 17423:2018 - "Intelligent transport systems - Cooperative systems - Application requirements and objectives" defines how ITS station application processes present communication needs to ITS station management so that the station can automatically select appropriate communication profiles. The standard describes the communication service parameters (CSPs) provided by applications, high‑level procedures for static and dynamic ITS‑S communication profile selection, and illustrative objectives for estimating an optimal ITS‑S communication profile.

Key keywords: ISO 17423:2018, Intelligent Transport Systems, Cooperative ITS (C‑ITS), ITS‑S communication profiles, communication service parameters (CSPs), ITS station management.

Key topics and technical requirements

ISO 17423 structures the selection of ITS‑S communication profiles around clearly defined CSPs and decision procedures:

• Communication service parameter classes - abstraction of application processes from communications; CSP categories that describe operational, destination, performance, security and protocol requirements.
• Operational CSPs - examples include logical channel, session continuity, average ADU generation rate, flow type, maximum priority, port number, expected flow lifetime.
• Destination CSPs - destination type and domain, communication distance and directivity.
• Performance CSPs - resilience, minimum throughput, maximum latency, maximum ADU size.
• Security CSPs - needs for confidentiality, integrity, non‑repudiation and source authentication.
• Protocol CSPs - requested protocol stack or specific communication protocols.
• Policies and regulations - cost policies, anonymity and location‑privacy requirements, and support for station authentication.
• ITS‑S procedures - presentation of CSPs to management, monitoring of communication capabilities and policies, static and dynamic selection processes, user interaction and support of other application processes.
• Supporting material - normative ASN.1 modules and informative annexes with CSP presentation examples and objective illustrations.

Practical applications and intended users

ISO 17423 is aimed at implementers and designers of ITS and C‑ITS systems who need standardized ways to map application requirements to communication configurations:

• Automotive OEMs and telematics suppliers designing in‑vehicle ITS station units (ITS‑SU)
• Roadside unit and infrastructure vendors enabling cooperative services
• ITS system architects and software developers implementing ITS‑S management and flow/path selection
• Network operators and integrators enforcing policies (cost, privacy, authentication)
• Standards bodies and certification teams aligning ITS applications with CALM architecture

Adopting ISO 17423 helps ensure consistent, interoperable automatic selection of communication profiles (e.g., for V2X/C‑ITS flows), optimized for performance, security and policy constraints.

Related standards

• ISO 21217 (CALM architecture)
• ISO 24102‑6 (flow and path management)
• ISO 17419 (identifiers)
• ISO 22418 and relevant ASN.1/ISO references cited in the standard

Using ISO 17423:2018 supports robust ITS station management, efficient resource use, and predictable behavior across cooperative transport systems.