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Standard
ISO 24221
First edition
Railway applications — Braking
2024-03
system — General requirements
Applications ferroviaires — Système de freinage — Exigences
générales
Reference number
ISO 24221:2024(en) © ISO 2024
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ISO 24221:2024(en)
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Published in Switzerland
© ISO 2024 – All rights reserved
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ISO 24221:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design requirements . 2
4.1 General requirements of the brake systems .2
4.2 General safety requirements .3
4.3 Requirements for the main brake system .3
4.3.1 General requirements .3
4.3.2 General functions on train level .5
4.3.3 Additional requirements at the vehicle level .7
4.4 Brake management / brake blending .8
4.5 Additional brake systems .9
4.5.1 General .9
4.5.2 Independent dynamic braking .9
4.5.3 Independent direct brake for locomotives and traction units.9
4.6 Wheel slide protection .11
4.7 Enhancement of wheel/rail adhesion . 13
4.8 Compatibility for rescue purposes . 13
5 Calculation requirements .
...