UIC 544-2

Railway Braking Force Estimation Methods

UIC 544-2 provides standardized calculation and estimation methods for determining braking force in railway rolling stock across different brake system types and operational scenarios. This technical standard defines mathematical models for translating brake system pressure, line force, and mechanical leverage into actual stopping power, accounting for variables such as wheel slip, temperature effects, and load conditions. The standard enables consistent performance prediction and certification across diverse European rail systems. Accreditation for this calculation methodology ensures reproducible, safety-critical engineering assessments used in rail fleet design and operational planning.

What it measures

  • Brake force calculation from system pressure and geometry
  • Adhesion coefficient effects on available braking force
  • Load-dependent braking force variations
  • Dynamic brake force response characteristics
  • Braking force distribution optimization
🇩🇪 DIN EN 14531-1 🇬🇧 BS EN 14531-1 🇫🇷 NF EN 14531-1 🇮🇹 UNI EN 14531-1 🇪🇸 UNE EN 14531-1 🇳🇱 NEN EN 14531-1
1,323 Accredited labs
15 Countries

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Eurofins Food Testing UK

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UKAS 9659 Grimsby, GB
Method 15.2 based on BS EN ISO ISO 15213-2 Method 9.8 based on BS EN BS EN Method 5.11 based on BS EN ISO Method 4.3 based on BS EN ISO + 3 more
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Eurofins Food Testing UK

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UKAS 2622 Linlithgow Bridge, GB
ISO 6579-1 ISO 4832 EUMM 3.03 based on BS EN EUMM 3.07 based on BS EN ISO BS ISO 21528-2:2017 + 3 more
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Eurofins Food Testing UK

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UKAS 0342 Wolverhampton, GB
ISO 712 ISO 4833-1 on BS EN ISO 1736:2008 ISO 21528-2 BS ISO 4832:2006 + 3 more
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Evolution Environmental

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UKAS 9661 Teston, GB
(HSG 264, 2012)
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Fibre Clear Consulting

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UKAS 1780 Wickford, GB
M002based on HSG 248 (HSG 248) – 2021 (PCM) based on HSG 248
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First Environment

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UKAS 0166 Cannock, GB
(HSG 264, 2012) on BS 8580-1:2019 and ACoP L8
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Fluke Precision Measurement

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UKAS 0183 Norwich, GB
Frequenc 220 mV range FREQUENCY 10 Hz to 100 kHz difference from 10 % to 100 % of the sta 6105A control 0° to 360° + 3 more
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Forensic Science Northern Ireland

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UKAS 1497 Carrickfergus, GB
ISO Mark Casting (TS5527)
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Fourbridge Consulting

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UKAS 9875 Benfleet, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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Fourstage Environmental

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UKAS 2671 Castle Donington, GB
(HSG 248) – 2021 (PCM) based on HSG 248 DOC/002 based on HSG 248
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Franks Portlock Consulting

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UKAS 4155 Sunderland, GB
5 of HSG 227 (2004) (HSG 264, 2012)
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Fugro GB

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UKAS 0919 Wallingford, GB
BS 1377: Part 2: 1990 BS 1377-3:2018 + A1:2021 ASTM D4186-12: 2020 ASTM D5334-22 ASTM D2216-19 + 3 more
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Full Circle Compliance

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UKAS 10287 Chelmsford, GB
(HSG 264, 2012)
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Furness Controls

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UKAS 0580 Bexhill, GB
FLOW Gas pressure (absolute) Gas pressure (gauge) DC CURRENT TEMPERATURE + 3 more
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G&L Consultancy

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UKAS 2083 Wellington, GB
(HSG 248) – 2021 M4 based on HSG 248 (PCM) based on HSG 248 M3 based on HSG 248 (HSG 264, 2012) + 1 more
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G&M Procter

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UKAS 2727 Perth, GB
based on ISO 11133:2014+Amd dependent) based on BS EN based on BS EN 12322:1999
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G.B.N.S. Partnership

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UKAS 4037 Welwyn Garden City, GB
(HSG 248) – 2021 (PCM) based on HSG 248 PRO02 based on HSG 248
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Glasgow City Council

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UKAS 1278 Glasgow, GB
(HSG 248) – 2021 staining based on HSG 248 F2011 (BS 696:Part 2:1989) F0131 (BS 1741:10-1:1989) using F0008 (BS 696:Part 2:1989) using + 3 more
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Global Safety & Environmental

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UKAS 7751 Sawbridgeworth, GB
(HSG 264, 2012)
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Green Shield Environmental

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UKAS 9528 Stevenage, GB
Appendix 5 of HSG 227 (2004) (HSG 264, 2012)
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Gully Howard Technical

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UKAS 2735 Portsmouth, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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Gully Howard Technical

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UKAS 0363 Portsmouth, GB
HSG 227 (2004)) (HSG 264, 2012) HSG 264 (2012) and Appx. 3 of Appendix 5 of HSG 227 (2004))
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HFS Environmental

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UKAS 4026 Meopham, GB
(HSG 248) – 2021 (PCM) based on HSG 248 (HSG 264, 2012)
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HSL Compliance

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UKAS 0642 Ross-on-Wye, GB
(HSG 248) – 2021 M003 based on HSG 248 (PCM) based on HSG 248 M002based on HSG 248 HSG 227 (2004)) + 2 more
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Hampshire Scientific Service

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UKAS 0024 Southsea, GB
(HSG 248) - 2021 ASB/SOP/OM8 based on HSG 248 ASB/SOP/OM6 based on HSG 248 DIN EN 12697-11 on BS 4401:Part 3:1970(1986) + 3 more
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Industries

Railway rolling stock engineering and design Brake system manufacturers and integrators Railway fleet operators Rail vehicle certification authorities Transport safety and compliance consulting

Related Standards

  • UIC 544-1 Railway brakes — Braking performance
  • UIC 541-01 Railway brakes — Brake pads — Part 1: Friction material specification
  • EN 14531-1 Railway applications — Safety requirements for the design of rolling stock

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