ISO 20383:2025Published

Tractors and machinery for agriculture — Speed Identification Sign (SIS)

Tracteurs et matériels agricoles et forestiers — Signe d'identification de la vitesse (SIV)

Abstract / scope

This document 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 agricultural field equipment.

This document is applicable to agricultural field equipment moving on public roads.

Life cycle

Replaces

ISO 20383:2017WithdrawnTractors and machinery for agriculture and forestry — Speed Identification Sign (SIS)International Standard · Published 16 Nov 2017 · ISO/TC 23/SC 4