# ISO 26021-4:2009 — Withdrawn and superseded ISO standards

For ISO 26021-4:2009, item title is Road vehicles — End-of-life activation of on-board pyrotechnic devices — Part 4: Additional communication line with bidirectional communication; status code is 9599; successor is ISO/WD 26021-4 | ISO/AWI 26021-2 | ISO 26021-3:2022 | ISO 26021-1:2022; withdrawn / published date is 2009-05-08, recorded from its source on 2026-08-05.

- **Identifier:** ISO 26021-4:2009 _(verified: appears in the quote below)_
- **Item title:** Road vehicles — End-of-life activation of on-board pyrotechnic devices — Part 4: Additional communication line with bidirectional communication _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/WD 26021-4 | ISO/AWI 26021-2 | ISO 26021-3:2022 | ISO 26021-1:2022
- **Withdrawn / published date:** 2009-05-08 _(verified: appears in the quote below)_

## What the source says

> 45459,IS,,ISO 26021-4:2009,Road vehicles — End-of-life activation of on-board pyrotechnic devices — Part 4: Additional communication line with bidirectional communication,Véhicules routiers — Activation de fin de vie des dispositifs pyrotechniques embarqués — Partie 4: Ligne de communication additionnelle avec communication bidirectionnelle,2009-05-08,1,['43.040.80'],ISO/TC 22/SC 31,9599,,"[74789,74787,81389,81383]",['en'],11,"<p>ISO 26021-4:2009 defines the requirements of redundancy hardware or software systems independent from the controller area network (CAN) line, which are activated by the additional communication line (ACL hardware line).</p><p>It describes the additional sequences of

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).