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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CONSTRUCCIONES Y AUXILIAR DE FERROCARRILES, S.A. Laboratorio de Materiales

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ACCREDIA 00034 Scanzorosciate, IT
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ENAC LE849 Zaragoza, ES
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BELAC 525-TEST Aalst, BE
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COFRAC 1-6619 Vinay, FR
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COFRAC 1-6057 Voisins Le Bretonneux, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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ACCREDIA 01048 Biella, IT
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COFRAC 1-0097 Charleville-Mezieres, FR
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COFRAC 1-1648 Nogent, FR
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COFRAC 1-1570 Chatellerault, FR
DIN EN 15194: 2018 DIN EN ISO 3071 DIN 53521 ISO 3071 ISO 4045 + 3 more
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COFRAC 1-10065 Chatellerault, FR
DIN EN 15194: 2018 ISO 3071 ISO 4045 DIN EN ISO 11243 DIN EN 16054 + 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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