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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Hull University Teaching Hospitals NHS Trust

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DAkkS D-K-18446-01-01 Rheinmünster, DE
Railway braking — urban guided transport Railway applications — vehicle reference Railway vehicles — specific test require - Gleichstromstärke Absolutdruck p * + 3 more
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Hydrae Srl a socio unico

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ACCREDIA 01586 Carbonate, IT
DIN EN 27888 DIN EN ISO 11885 DIN EN 13657 DIN EN ISO 10523 DIN EN 14346 + 3 more
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XP T90-383
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Hydro Technical Engineering

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ACCREDIA 01884 Peschiera del Garda, IT
ISO 11465 UNI 11184 DM 06/09/1994 GU n 288 10/12/1994 Reg CE 761/2009 23/07/2009 GU CE
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DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 17141 ISO 11731 ISO 16649-2 + 3 more
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Hydroscope

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DIN EN ISO 19458 ISO 11731 ISO 19458 NEN-EN-ISO 11731 5489 5490 en 5489
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10/1500 DIN EN ISO 11737-2 DIN EN ISO 17141 DIN EN ISO 17405 ISO 22196 + 3 more
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ACCREDIA 01068 Roma, IT
ISO 4832 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6888-2 DIN EN ISO 19458 + 3 more
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Hywel Dda University Health Board

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Häfner Gewichte GmbH MASSCAL - Kalibrierlaboratorium

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Höntzsch

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DAkkS D-K-18674-01-00 Waiblingen, DE
Railway brakes — brake performance (UIC Railway pantographs — requirements for m Volumendurchfluss Massedurchfluss Strömungsgeschwindigkeit + 3 more
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Hücker & Hücker

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DAkkS D-PL-13458-01-00 Kelkheim, DE
DIN EN ISO 11737-2 VDA 621-422 DIN EN 13060 DIN EN 14180 DIN EN ISO 17665-1 + 3 more
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I&T NARDONI INSTITUTE SRL

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DIN EN 10160 DIN EN ISO 16810 DIN EN ISO 17637 DIN EN 13018 DIN EN ISO 17638 + 3 more
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ACCREDIA 01266 Sumirago, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN ISO 9015-1 DIN EN ISO 17639 ASTM E 8 + 3 more
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DIN EN 61439-1 EN IEC 61439-1 DIN EN 60204-1 BS EN (IEC) 61439-2:2011 EN 61439-2
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I.R.S.A.Q. Srl Istituto di Ricerca sulla Sicurezza Ambiente e Qualità

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ACCREDIA 01032 Collegno, IT
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I.S.M.A.C. Istituto Medico analisi Chimico-Cliniche srl

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ACCREDIA 00499 Gatteo, IT
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I.S.P.A. srl Istituto sperimentale problematiche ambientali

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ACCREDIA 00832 Atina, IT
DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 19458 DIN EN ISO 11885 DIN EN 13657 + 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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