EN ISO 24478:2024/prA1:2025

SLOVENSKI STANDARD
01-januar-2026
Železniške naprave - Zavore - Splošni slovar - Dopolnilo A1 (ISO 24478:2023/DAM
1:2025)
Railway applications - Braking - General vocabulary - Amendment 1 (ISO
24478:2023/DAM 1:2025)
Bahnanwendungen - Bremsen - Fachbegriffe - Änderung 1 (ISO 24478:2023/DAM
1:2025)
Applications ferroviaires - Freinage - Vocabulaire général - Amendement 1 (ISO
24478:2023/DAM 1:2025)
Ta slovenski standard je istoveten z: EN ISO 24478:2024/prA1:2025
ICS:
01.040.45 Železniška tehnika (Slovarji) Railway engineering
(Vocabularies)
45.040 Materiali in deli za železniško Materials and components
tehniko for railway engineering
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
Amendment
ISO 24478:2023/
DAM 1
ISO/TC 269/SC 2
Railway applications — Braking —
Secretariat: AFNOR
General vocabulary
Voting begins on:
AMENDMENT 1
2025-11-17
Applications ferroviaires — Freinage — Vocabulaire général Voting terminates on:
2026-02-09
AMENDEMENT 1
ICS: 01.040.45; 45.020
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
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Reference number
ISO 24478:2023/DAM 1:2025(en)
DRAFT
ISO 24478:2023/DAM 1:2025(en)
Amendment
ISO 24478:2023/
DAM 1
ISO/TC 269/SC 2
Railway applications — Braking —
Secretariat: AFNOR
General vocabulary
Voting begins on:
AMENDMENT 1
2025-11-17
Applications ferroviaires — Freinage — Vocabulaire général
AMENDEMENT 1
Voting terminates on:
ICS: 01.040.45; 45.020
2026-02-09
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland Reference number
ISO 24478:2023/DAM 1:2025(en)
ii
ISO 24478:2023/DAM 1:2025(en)
Foreword
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This document was prepared by Technical Committee ISO/TC 269, Railway applications, Subcommittee SC 2,
Rolling stock.
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iii
ISO 24478:2023/DAM 1:2025(en)
Railway applications — Braking — General vocabulary
AMENDMENT 1
Introduction, second paragraph
Replace “may” with “can”
3.1.1
Add “brake application” as admitted term

3.1.2
Change “brake system” to preferred term and “brake” to admitted term

Add note 2 to entry as follows:
“Note 2 to entry: One braking demand is managed by only one brake system.”

3.1.3
Change definition as follows:
“device or assembly of components, that is the origin of the braking force/torque”

Change note 2 to entry as follows:
“Note 2 to entry: For tread brake and disc brake, it consists of the brake actuator and the friction couple
(pads or block), but the disc/wheel tread are part of the brake system.”

3.1.4
Add new 3.1.4 as follows:
3.1.4
main brake system
trainwide continuous brake system which enables emergency braking, service braking and parking
Note 1 to entry: The main brake system can also ensure holding function and immobilizing function.

3.1.5
ISO 24478:2023/DAM 1:2025(en)
Add new 3.1.5 as follows:
3.1.5
brake subsystem
combination of brake units and their local control devices, usually per type of brake units (e.g. friction brake
subsystem)
3.5.4
In the definition, replace “hold” with “keep”

3.5.8, 3.5.9
Add the following new terms and definitions and renumber former 3.5.8 to 3.5.10 and former 3.5.9 to 3.5.11:
3.5.8
maximum braking payload
typical payload for maximal braking conditions which is lower or equal to exceptional payload
3.5.9
design mass under maximum braking payload
MXB
design mass in working order plus maximum braking payload
Note 1 to entry: The “design mass under maximum braking payload” is also known as “maximum braking load”.

3.6.28
Change term to “increasing braking deceleration”
In the definition, delete “variation in”

3.6.31
Replace “brake deceleration” with “deceleration”

3.6.32
Change term to “equivalent braking deceleration”
In the definition replace “brake deceleration” with “deceleration”

3.6.33
Change term to “decreasing braking deceleration”
In the definition delete “variation in”

3.7.1
Replace “brake system” with “brake subsystem”

ISO 24478:2023/DAM 1:2025(
...