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
🇧🇪 NBN EN 14531-1 🇩🇪 DIN EN 14531-1 🇬🇧 BS EN 14531-1 🇫🇷 NF EN 14531-1 🇮🇹 UNI EN 14531-1 🇪🇸 UNE EN 14531-1 🇳🇱 NEN EN 14531-1
3,525 Accredited labs
21 Countries

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ENAC LE723 Castellón de la Plana, ES
BS ISO 15713:2006 UNE-EN 15058 UNE-EN 14792 UNE-EN 14789 UNE-EN 12619 + 3 more
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DAkkS D-PL-14537-01-03 Osnabrück, DE
DIN ISO 16000-18 DIN EN ISO 10523 (C 5) DIN EN ISO 5667-3 (A 21) DIN 38404-C 4 DIN EN 868-5 + 3 more
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UKAS 1854 Reading, GB
(HSG 248) – 2021 (PCM) based on HSG 248 LQP007 based on HSG 248 LQP003 based on HSG 248
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UKAS 0477 Gosport, GB
the guidance of GPG 14 PERSONAL DOSE EQUIVALENT: RESPONSE:
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DAkkS D-PL-14128-01-01 Göttingen, DE
DIN EN ISO 19458 DIN 19682-1 DIN 19682-2 DIN ISO 16000-3 DIN ISO 16000-6 + 3 more
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BELAC 682-TEST Uccle, BE
Surface polarimeters Transmission and reflection polarimeters Calibration plate for surface stress mea Calibration plate for transmissive/refle ASTM C1279 15.1 Procedure A and EN 12150 + 3 more
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DAkkS D-PL-17095-01-03 Berlin, DE
DIN EN 12880 DIN EN ISO 19458 DIN EN 932-1 DIN 19682-2 DIN EN ISO 11885 + 3 more
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RvA M063 Maastricht, NL
11p15 MLPA BS SOP004 using sandwich immunoassay Fragment Lengte variant onderzoek Chromosomale varianten onderzoek Copy Number Variant (CNV) onderzoek + 3 more
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UKAS 2418 Cleckheaton, GB
(HSG 264, 2012) (HSG 248) – 2021 Appendix 5 of HSG 227 staining based on HSG 248 (PCM) based on HSG 248
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UKAS 0483 Hemel Hempstead, GB
DIN EN 1793-1 DIN EN 1793-2 ISO 1407 ISO 7171 ISO 354 + 3 more
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UKAS 0653 Milton Keynes, GB
Sound Calibrators Pistonphones based: level Microphones + 2 more
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UKAS 8504 Glasgow, GB
(HSG 264:2012) HSG 227 Appendix 5: By HSG 227 Appendix 3: By
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DAkkS D-PL-11041-01-00 Burscheid, DE
DIN 75410-2 DIN ISO 27955 DIN 75410-2
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UKAS 9997 London, GB
Helicobacter pylori Measurement Collagen Muscle: Smooth/striated | Desmin Erythrocytes + 3 more
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UKAS 1611 Chadderton, GB
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN 10164 ISO 6506-1 ISO 6507-1 + 3 more
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ACCREDIA 02302 Luni, IT
DIN EN 14346 ISO 15705 UNI EN 14346
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DAkkS D-ML-18692-01-00 Dresden, DE
OMIM*164790, RUNX1 NPM1 Chimärismusanalyse JAK2 E14 RUNX1E5 + 3 more
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ACCREDIA 00891 Jesi, IT
DIN EN ISO 6888-2 BS EN 15662 DIN EN ISO 14501 ISO 6222 ISO 7899-2 + 3 more
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RvA L320 Ferwert, NL
Bakterien 2: Clostridioides ISO 15923-1 NEN 5793 NEN 5704 DIN EN 16179 + 3 more
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ACCREDIA 01703 Verona, IT
DIN EN ISO 15587-2 DIN EN 13805 DIN EN 17194 DIN EN 17053 BS EN ISO 17294-2 + 3 more
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ACCREDIA 01009 Castrovillari, IT
DIN EN ISO 13366-2 ISO 9622 ISO 13366-2 UNI 11981
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ACCREDIA 01432 Piacenza, IT
DIN EN 27888 DIN EN ISO 11885 DIN EN 14039 DIN EN ISO 16703 DIN EN 12457-2 + 3 more
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DAkkS D-K-19342-01-02 Holzkirchen, DE
Railway braking — urban guided transport Railway bogies — wheelsets and bogies st Railway vehicles — gauge limits (UIC 505 - Gleichspannung - Gleichstromstärke + 3 more
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UKAS 0553 Wandsworth, GB
ASB/SOP/OM8 based on HSG 248 (HSG 264, 2012) (HSG 248) – 2021 (PCM) based on HSG 248 (PCM) based on HSG 248) + 2 more
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UKAS 2054 Manchester, GB
(HSG 264, 2012) (HSG 248) – 2021 (PCM) based on HSG 248 AEC 1 based on HSG 248 AEC 6 based on HSG 248
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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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