# ISO 21177:2023 — Withdrawn and superseded ISO standards

For ISO 21177:2023, item title is Intelligent transport systems — ITS station security services for secure session establishment and authentication between trusted devices; status code is 9599; successor is ISO 21177:2024; withdrawn / published date is 2023-04-07, recorded from its source on 2026-08-05.

- **Identifier:** ISO 21177:2023 _(verified: appears in the quote below)_
- **Item title:** Intelligent transport systems — ITS station security services for secure session establishment and authentication between trusted devices _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 21177:2024
- **Withdrawn / published date:** 2023-04-07 _(verified: appears in the quote below)_

## What the source says

> 81067,IS,,ISO 21177:2023,Intelligent transport systems — ITS station security services for secure session establishment and authentication between trusted devices,Systèmes de transport intelligents — Services de sécurité des stations ITS pour l’établissement et l’authentification des sessions sécurisées entre dispositifs de confiance,2023-04-07,1,"['35.030','35.240.60','03.220.01']",ISO/TC 204,9599,[70056],[87225],"['en','fr']",100,"<p class='MsoBodyText' style='mso-layout-grid-align: none; text-autospace: none;'><span lang='EN-GB' style='mso-bidi-font-size: 12.0pt;'>This document contains specifications for a set of ITS station security services required to ensure the authenticity of the so

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).