# ISO 3731:1980 — Withdrawn and superseded ISO standards For ISO 3731:1980, item title is Road vehicles — Electrical connections between towing vehicles and trailers with 24 V electrical equipment — Type 24 S (supplementary); status code is 9599; successor is ISO 3731:1997; withdrawn / published date is 1980-07-01, recorded from its source on 2026-08-05. - **Identifier:** ISO 3731:1980 _(verified: appears in the quote below)_ - **Item title:** Road vehicles — Electrical connections between towing vehicles and trailers with 24 V electrical equipment — Type 24 S (supplementary) _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 3731:1997 - **Withdrawn / published date:** 1980-07-01 _(verified: appears in the quote below)_ ## What the source says > 9214,IS,,ISO 3731:1980,Road vehicles — Electrical connections between towing vehicles and trailers with 24 V electrical equipment — Type 24 S (supplementary),Véhicules routiers — Liaisons électriques entre véhicules tracteurs et véhicules remorqués avec équipement électrique 24 V — Type 24 S (supplémentaire),1980-07-01,2,['43.040.10'],ISO/TC 22,9599,,[9215],"['en','fr']",4, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).