ISO/AWI 24221-1Under development

Railway applications — Braking system — Part 1: General requirements

Applications ferroviaires — Système de freinage — Partie 1: Exigences générales

Abstract / scope

This document specifies the general requirements for brake systems. This document focuses on general principles and general requirements of brake systems.

This document is applicable for all types of rolling stock during design and whole lifetime. This document does not specify the braking performance criteria.

This document can be applied to all rolling stock with metal to metal wheel/rail contact irrespective of speed classification.

Life cycle

Replaces

ISO 24221:2024PublishedRailway applications — Brake system — General requirementsInternational Standard · Published 8 Mar 2024 · ISO/TC 269/SC 2ISO 24221:2024/Amd 1:2026PublishedRailway applications — Brake system — General requirements — Amendment 1International Standard · Published 22 Sep 2026 · ISO/TC 269/SC 2