# ISO 20383:2017 — Withdrawn and superseded ISO standards

For ISO 20383:2017, item title is Tractors and machinery for agriculture and forestry — Speed Identification Sign (SIS); status code is 9599; successor is ISO 20383:2025; withdrawn / published date is 2017-11-16, recorded from its source on 2026-08-05.

- **Identifier:** ISO 20383:2017 _(verified: appears in the quote below)_
- **Item title:** Tractors and machinery for agriculture and forestry — Speed Identification Sign (SIS) _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 20383:2025
- **Withdrawn / published date:** 2017-11-16 _(verified: appears in the quote below)_

## What the source says

> 67871,IS,,ISO 20383:2017,Tractors and machinery for agriculture and forestry — Speed Identification Sign (SIS),Tracteurs et matériels agricoles et forestiers — Signe d'identification de la vitesse (SIV),2017-11-16,1,['65.060.10'],ISO/TC 23/SC 4,9599,,[90099],"['en','fr']",6,"<p>ISO 20383:2017 specifies the dimensions, characteristics, and positioning of Speed Identification Signs (SIS). These signs indicate the maximum equipment ground speed, based on the ground speed design capability, for an agricultural vehicle.</p><p>A rear-facing SIS is visible to other operators on public roads approaching the equipment from behind. A forward-facing SIS, mounted on the front of towed equipment, alerts

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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).