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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ACCREDIA 00390 Follonica, IT
ISO 18787 ISO 4832 ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 + 3 more
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ACCREDIA 00554 Rubano, IT
DIN EN 27888 ISO 4832 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 6888-2 + 3 more
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ACCREDIA 00172 Ancona, IT
ISO 4832 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 21528-2 DIN EN ISO 18593 + 3 more
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ACCREDIA 00056 Sassuolo, IT
BS EN ISO10545-15:2021 ISO 10545-15
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ENAC LE1385 Beasain, ES
Whole-body vibration — evaluation of hum Railway ride comfort for passengers (EN Railway running behaviour and bogies — t Railway pass-by noise measurement (ISO 3 Railway interior noise measurement (ISO + 3 more
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ENAC LE149 Móstoles, ES
Sound intensity — scanning method (ISO 9 IEC 60695-2-10: 2013 IEC 60695-2-11 IEC 60695-11-5: 2016 IEC 60695-2-12: 2010 + 3 more
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ENAC LE471 Madrid, ES
ISO 13166 ISO 13164-4 OM H-3 based on ISO 9698:2019 ISO 18589-5:2009 by gas ISO 10704 + 3 more
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ENAC LE2543 Santa Cruz de Tenerife, ES
UNE-EN ISO 5667-19 UNE-EN ISO 16665 UNE-EN 19493
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ENAC LE1355 Carreño, ES
ISO 5667-11 ISO 1928 ISO 1171 ISO 19579 ISO 29541 + 3 more
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ENAC LE349 Río Negro, ES
ISO 11290-1 ISO 6579-1 ISO 11465 ISO 14501 AOAC 2015.05 + 3 more
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ENAC LE389 Madrid, ES
ISO 11294 ISO 3433:2008 UNE-EN ISO 10304-1 UNE-EN ISO 17294-1 UNE-EN 17851 + 3 more
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ENAC LE2151 Sevilla, ES
DIN EN ISO 3745 ISO 3071 ISO 4045 ISO 16321-2 ISO 16321-3 + 3 more
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ENAC LE1469 San Adrián, ES
ISO 18787 ISO 21527-1 ISO 21527-2 DIN EN ISO 16649-3 ISO 5667-11 + 3 more
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ACCREDIA 00237 Carpi, IT
DIN EN 20105 DIN EN ISO 9073-1 DIN EN ISO 13934-1 DIN EN 13759 DIN EN ISO 1421 + 3 more
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ACCREDIA 02239 Volla, IT
DIN EN 13657 DIN EN 14346 DIN EN ISO 10304-1 DIN EN 14039 DIN EN 15936 + 3 more
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ACCREDIA 00543 Salara, IT
DIN EN ISO 4833-1 DIN EN 12880 DIN EN 14346 DIN EN ISO 16911-1 DIN EN 13284-1 + 3 more
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ACCREDIA 00029 Busto Arsizio, IT
ISO 3795 DIN EN ISO 659 DIN EN ISO 16212 DIN EN ISO 10863 DIN EN 1015-11 + 3 more
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CENTROCAL

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DAkkS D-K-17734-01-01 Werne, DE
Railway brake handbooks (UIC 547) - Direktanzeigende Thermometer - Thermopaare, Thermoelemente Taupunkttemperatur Temperatursimulatoren + 3 more
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ACCREDIA 01358 Casalecchio di Reno, IT
BS EN ISO 16911-1:2013 using ISO 23695 NF EN 13284-1
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CEREA SPA

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ACCREDIA 01987 Cerea, IT
DIN EN 27888 DIN EN ISO 1133-1 DIN EN ISO 3451-1 DIN EN ISO 15587-2 DIN EN 13657 + 3 more
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COFRAC 1-1209 Garons, FR
DIN EN 27888 ISO 4832 ISO 15214 ISO 21527-2 DIN ISO 16649-2 + 3 more
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COFRAC 1-0894 Lieu Saint-Amand, FR
DIN EN 27888 ISO 15214 DIN EN ISO 6579-1 DIN EN ISO 7932 DIN EN ISO 11290-1 + 3 more
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COFRAC 1-7543 Sourdun, FR
Tensile testing of metallic materials (I Salt spray / neutral salt fog test (ISO ISO 6270-1 DIN EN ISO17892-12 ISO 19840 + 3 more
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COFRAC 1-5710 Saint-Quentin, FR
Tensile testing of metallic materials (I DIN EN 12390-3 DIN EN 933-1 DIN EN 933-3 DIN EN 1097-2 + 3 more
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COFRAC 1-5697 Aix-En-Provence, FR
Tensile testing of metallic materials (I DIN EN 62196-1: 2015 DIN EN 12390-3 DIN EN 932-2 DIN EN 933-1 + 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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