# ISO 16844-4:2004 — Withdrawn and superseded ISO standards For ISO 16844-4:2004, item title is Road vehicles — Tachograph systems — Part 4: CAN interface; status code is 9599; successor is ISO 16844-4:2015; withdrawn / published date is 2004-09-07, recorded from its source on 2026-08-05. - **Identifier:** ISO 16844-4:2004 _(verified: appears in the quote below)_ - **Item title:** Road vehicles — Tachograph systems — Part 4: CAN interface _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 16844-4:2015 - **Withdrawn / published date:** 2004-09-07 _(verified: appears in the quote below)_ ## What the source says > 33657,IS,,ISO 16844-4:2004,Road vehicles — Tachograph systems — Part 4: CAN interface,Véhicules routiers — Systèmes tachygraphes — Partie 4: Interface CAN,2004-09-07,1,['43.040.10'],ISO/TC 22/SC 31,9599,,[57314],['en'],18,"

ISO 16844-4:2004 specifies the CAN (controller area network) interface for the interchange -- performed in accordance ISO 16844-6 -- of digital information between a road vehicle's tachograph system and vehicle units, and within the tachograph system itself. It specifies parameters of, and requirements for, the physical and data link layers of the electrical connection used in the electronic systems.

" ## 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 Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).