# ISO 7634:2003 — Withdrawn and superseded ISO standards For ISO 7634:2003, item title is Road vehicles — Compressed-air braking systems — Test procedures; status code is 9599; successor is ISO 7634:2007 | ISO/WD 7634; withdrawn / published date is 2003-05-20, recorded from its source on 2026-08-05. - **Identifier:** ISO 7634:2003 _(verified: appears in the quote below)_ - **Item title:** Road vehicles — Compressed-air braking systems — Test procedures _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 7634:2007 | ISO/WD 7634 - **Withdrawn / published date:** 2003-05-20 _(verified: appears in the quote below)_ ## What the source says > 27127,IS,,ISO 7634:2003,Road vehicles — Compressed-air braking systems — Test procedures,Véhicules routiers — Dispositifs de freinage à air comprimé — Modes opératoires d'essai,2003-05-20,2,['43.040.40'],ISO/TC 22,9599,[14442],"[44051,36968]",['en'],45,"
ISO 7634:2003 specifies procedures for testing the compressed-air braking systems of full trailers, semi-trailers and centre-axle trailers, with and without antilock braking system (ABS), corresponding to road vehicles of Category O as defined in UNECE R.E. 3.
" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).