# ISO 4138:1982 — Withdrawn and superseded ISO standards For ISO 4138:1982, item title is Road vehicles — Steady-state circular test procedure; status code is 9599; successor is ISO 4138:1996; withdrawn / published date is 1982-08-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 4138:1982 _(verified: appears in the quote below)_ - **Item title:** Road vehicles — Steady-state circular test procedure _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 4138:1996 - **Withdrawn / published date:** 1982-08-01 _(verified: appears in the quote below)_ ## What the source says > 9897,IS,,ISO 4138:1982,Road vehicles — Steady-state circular test procedure,Véhicules routiers — Méthode d'essai en régime permanent sur trajectoire circulaire,1982-08-01,1,['43.020'],ISO/TC 22,9599,,[21461],"['en','fr']",14, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).