# ISO/TR 3778:1987 — Withdrawn and superseded ISO standards For ISO/TR 3778:1987, item title is Agricultural tractors — Maximum actuating forces required to operate controls; status code is 9599; successor is ISO/CD 3778 | ISO/TS 15077:2002; withdrawn / published date is 1987-04-09, recorded from its source on 2026-08-05. - **Identifier:** ISO/TR 3778:1987 _(verified: appears in the quote below)_ - **Item title:** Agricultural tractors — Maximum actuating forces required to operate controls _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/CD 3778 | ISO/TS 15077:2002 - **Withdrawn / published date:** 1987-04-09 _(verified: appears in the quote below)_ ## What the source says > 9303,TR,,ISO/TR 3778:1987,Agricultural tractors — Maximum actuating forces required to operate controls,Tracteurs agricoles — Forces maximales nécessaires pour manoeuvrer les organes de commande,1987-04-09,2,['65.060.10'],ISO/TC 23/SC 3,9599,[9302],"[20657,36685]","['en','fr']",1,"
This second edition cancels and replaces the first edition (1978). Recommends the maximum actuating forces; the forces specified do not relate to machine performance. Tabulates the devices to be operated, the types of control, the actuating forces required (ranging from 70 to 600 N). Applies to tractors equipped with normal controls.
" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).