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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− Strömungsgeschwindigkeit von Gasen Strömungsgeschwindigkeit am Standort Vectoflow Windtunnel A, Frie von Gasen 15 m/s bis > 38 m/s + 3 more
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Velindre University NHS Trust

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UKAS 9326 Talbot Green, GB
HLA-DR HLA-DQA1 HLA-DQB1 HLA-DPB1 Samples | HLA-DPA1 + 3 more
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Veneta Mineraria

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ACCREDIA 02087 Este, IT
ISO 13320 ISO 787-9 ISO 3087 APAT CNR IRSA 4020 Man 29 2003
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Veneto Agricoltura - Istituto per la Qualità e le Tecnologie Agroalimentari

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ACCREDIA 00383 Thiene, IT
DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 6888-2 DIN EN ISO 11290-1 + 3 more
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Verbo ribaltabili Srl

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Circ Min Trasp n 18911 02/08/2018
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ISO 21527-2 DIN EN ISO 17141 DIN EN 13126-19 DIN EN ISO 15587-2 DIN EN 13657 + 3 more
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Versuchs- und Lehranstalt für Brauerei in Berlin (VLB) e. V.

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DIN EN ISO 19458 DIN EN ISO 6508-1 DIN ISO 5667-5 DIN EN ISO 19458 (K 19) DIN EN ISO 11731 (K 23) + 3 more
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Vesco Srl

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ACCREDIA 01545 Sandrigo, IT
Circ Min Trasp n 18911 02/08/2018
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Vibration Research Europe

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Railway brake — magnetic track brakes (U - Gleichspannung - Wechselspannung auch Vor-Ort Kalibrierung − Frequenz und Drehzahl
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Vibtec GmbH Engineering and Testing

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DAkkS D-PL-17716-01-01 Zuzenhausen, DE
VDE 0468-2-1 DIN EN 60068-2-14 VDE 0468-2-14 VDE 0468-2-27 DIN EN 60068-2-30 + 3 more
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Viesse Group

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ACCREDIA 02383 Contursi Terme, IT
EU PHARMA 01/2025 EU PHARMA 01/2024 EU PHARMA 07/2016 USP-NF par 62 2013
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Villani S.p.A. - Laboratorio di Ricerca e Controllo

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Vincentius-Diakonissen-Kliniken gemeinnützige AG Zentrallabor

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Vintec Laboratories

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UKAS 1249 Garston, GB
(HSG 248) – 2021 (PCM) based on HSG 248 P052 based on HSG 248
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ACCREDIA 01042 Monteriggioni, IT
ISO 4832 ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 DIN EN ISO 4833-1 + 3 more
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Winkel > 10 µm Position − Permanentes Laboratorium Positionen und Abstände + 3 more
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ACCREDIA 00962 Palermo, IT
IEC 60512-17-1 ISO 2171 ISO 712-1 COI/T.20/Doc n 35/rev 1 2017 COI/T.20/Doc n 34/rev 1 2017 + 3 more
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Vrije Universiteit Brussel – Vestigingsplaats UZ Brussel

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BELAC 141-TEST Brussel, BE
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WAAGEN-SANDER

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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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