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
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ISO 20653 DIN EN 60529 IEC 60529: 1989 IEC 61400-50 ISO 16232-2 + 3 more
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Patrimoine de l'Université de Liège - Serv. Univ. de Contrôle Physique des Radiations - Dosimétrie

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UKAS 0307 Newcastle-upon-Tyne, GB
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UKAS 0635 Newcastle-upon-Tyne, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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UKAS 9854 Granborough, GB
TEMPERATURE TIME INTERVAL ROTATIONAL SPEED loggers GAS CONTENT + 3 more
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(HSG 264, 2012) Executive guides HSG 264 (2012) and Appx. 3 of HSG 227 (2004))
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UKAS 0598 Fareham, GB
(HSG 248) – 2021 (PCM) based on HSG 248 Manual based on HSG 248
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Perschmann Calibration

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DAkkS D-K-15089-01-01 Braunschweig, DE
Sound intensity — scanning method (ISO 9 Sound intensity — scanning method part 2 Railway braking — urban guided transport Railway braking — urban guided transport Railway vehicles — gauge limits (UIC 505 + 3 more
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PfB GmbH & Co. Prüfzentrum für Bauelemente

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Pharmaserv GmbH Kalibrierlabor

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Railway braking — urban guided transport Temperaturmessgrößen - Direktanzeigende Thermometer 1) In den CMC sind die erweiterten Messu Oberflächenthermometer + 3 more
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EPPO PM 7/24 rev 5 2023 Appendix 5
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DIN EN ISO 3650:1999 − Längenmessgeräte Durchmesser 1 mm Prüfstifte Bügelmessschrauben 0 mm + 3 more
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ACCREDIA 00063 Milano, IT
ISO 37 ISO 188 ISO 28580 ISO 10231 ISO 10191 + 3 more
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ACCREDIA 00927 Prignano Cilento, IT
ISO 9308-1 EPA 200.8 1994 Rapporti ISTISAN 2007/31 pag 115 Rapporti ISTISAN 2007/05 pag 32 Met Rapporti ISTISAN 2007/31 pag 60 Met + 1 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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