# ISO/TR 4011:1976 — Withdrawn and superseded ISO standards For ISO/TR 4011:1976, item title is Road vehicles — Apparatus for measurement of the opacity of exhaust gas from diesel engines; status code is 9599; successor is ISO 11614:1999; withdrawn / published date is 1976-06-01, recorded from its source on 2026-08-05. - **Identifier:** ISO/TR 4011:1976 _(verified: appears in the quote below)_ - **Item title:** Road vehicles — Apparatus for measurement of the opacity of exhaust gas from diesel engines _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 11614:1999 - **Withdrawn / published date:** 1976-06-01 _(verified: appears in the quote below)_ ## What the source says > 9690,TR,,ISO/TR 4011:1976,Road vehicles — Apparatus for measurement of the opacity of exhaust gas from diesel engines,Véhicules routiers — Dispositif pour le mesurage de l'opacité des gaz d'échappement des moteurs diesel,1976-06-01,1,"['13.040.50','43.180']",ISO/TC 22,9599,,[19551],"['en','fr']",17, ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).