# ISO 4138:2012 — Withdrawn and superseded ISO standards

For ISO 4138:2012, item title is Passenger cars — Steady-state circular driving behaviour — Open-loop test methods; status code is 9599; successor is ISO 4138:2021; withdrawn / published date is 2012-06-01, recorded from its source on 2026-08-05.

- **Identifier:** ISO 4138:2012 _(verified: appears in the quote below)_
- **Item title:** Passenger cars — Steady-state circular driving behaviour — Open-loop test methods _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 4138:2021
- **Withdrawn / published date:** 2012-06-01 _(verified: appears in the quote below)_

## What the source says

> 54143,IS,,ISO 4138:2012,Passenger cars — Steady-state circular driving behaviour — Open-loop test methods,Voitures particulières — Tenue de route en régime permanent sur trajectoire circulaire — Méthodes d'essai en boucle ouverte,2012-06-01,4,['43.100'],ISO/TC 22/SC 33,9599,[30084],[81710],['en'],19,"<p>ISO 4138:2012 specifies open-loop test methods for determining the steady-state circular driving behaviour of passenger cars as defined in ISO 3833 and of light trucks, such behaviour being one of the factors comprising vehicle dynamics and road-holding properties. The open-loop manoeuvres included in these methods are not representative of real driving conditions, but are nevertheless useful

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).