# ISO 4138:2004 — Withdrawn and superseded ISO standards For ISO 4138:2004, item title is Passenger cars — Steady-state circular driving behaviour — Open-loop test methods; status code is 9599; successor is ISO 4138:2012; withdrawn / published date is 2004-09-20, recorded from its source on 2026-08-05. - **Identifier:** ISO 4138:2004 _(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the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 4138:2012 - **Withdrawn / published date:** 2004-09-20 _(verified: appears in the quote below)_ ## What the source says > 30084,IS,,ISO 4138:2004,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,2004-09-20,3,['43.100'],ISO/TC 22,9599,[21461],[54143],['en'],19,

ISO 4138:2004 specifies open-loop test methods for determining the steady-state circular driving behaviour of passenger cars as defined in ISO 3833 and light trucks.

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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).