# ISO/TS 21177:2019 — Withdrawn and superseded ISO standards

For ISO/TS 21177:2019, 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session establishment and authentication between trusted devices; status code is 9599; successor is ISO 21177:2023; withdrawn / published date is 2019-08-07, recorded from its source on 2026-08-05.

- **Identifier:** ISO/TS 21177:2019 _(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 21177:2023
- **Withdrawn / published date:** 2019-08-07 _(verified: appears in the quote below)_

## What the source says

> 70056,TS,,ISO/TS 21177:2019,Intelligent transport systems — ITS station security services for secure session establishment and authentication between trusted devices,Titre manque,2019-08-07,1,"['35.030','35.240.60','03.220.01']",ISO/TC 204,9599,,[81067],['en'],83,"<p>This document contains specifications for a set of ITS station security services required to ensure the authenticity of the source and integrity of information exchanged between trusted entities:</p><p>— devices operated as bounded secured managed entities, i.e. 'ITS Station Communication Units' (ITS-SCU) and 'ITS station units' (ITS-SU) specified in ISO 21217, and</p><p>— between ITS-SUs (composed of one or se

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).