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ISO 20383:2025

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

Publication date:   Oct 8, 2025

General information

60.60   Standard published   Oct 8, 2025

ISO

ISO/TC 23/SC 4 Tractors

International Standard

65.060.10   Agricultural tractors and trailed vehicles

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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

PREVIOUSLY

WITHDRAWN
ISO 20383:2017

NOW

PUBLISHED
ISO 20383:2025
60.60 Standard published
Oct 8, 2025