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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21 Countries

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COFRAC 1-7428 Saint Germain Du Puch, FR
DIN EN 27888 DIN EN ISO 10523 DIN ISO 17289 DIN EN ISO 5667-15 ISO 10523 + 3 more
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NF EN ISO 11136 ISO 13299 NF V 09-500
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NF EN ISO 11136 NF V 09-500
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COFRAC 1-7363 Beaucouzé, FR
NF T 90-333 NF T 90-388 NF T 90-354 NF T 90-395 NF T 90-328 + 3 more
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ISO 4832 ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 DIN EN ISO 4833-1 + 3 more
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ACCREDIA 00456 Crema, IT
DIN EN ISO 5983-2 DIN EN ISO 665 ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 + 3 more
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UKAS 31262 Belfast, GB
Morphological assessment and interpretat Molecular examination activities Immunohistochemistry examination activit Immunohistochemistry to detect CLDN 18 + 3 more
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ACCREDIA 00467 Tromello, IT
DIN EN 15408 DIN EN 13657 DIN EN 14346 DIN EN ISO 10304-1 DIN EN ISO 17294-2 + 3 more
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ACCREDIA 00460 Pisa, IT
DIN EN 27888 ISO 4832 ISO 21527-1 ISO 21527-2 DIN EN ISO 4833-1 + 3 more
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ACCREDIA 01923 Trieste, IT
DIN EN 13725:2003-07 und Berichtigung UNI EN 13725
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ENAC LE2318 Valencia, ES
Railway wheel-rail interaction — roughne BS ISO 15713:2006 UNE-EN ISO 16911-1 UNE-EN 15058 UNE-EN 14792 + 3 more
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ACCREDIA 00485 Fermo, IT
DIN EN ISO 4833-1 DIN EN ISO 6888-2 DIN EN ISO 17141 DIN EN 1186-3 ISO 11731 + 3 more
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COFRAC 1-6300 Pleurtuit, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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ACCREDIA 00464 Roma, IT
ISO 18787 ISO 21527-1 ISO 21527-2 DIN EN ISO 6579-1 DIN EN ISO 7932 + 3 more
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ACCREDIA 00823 Valenzano, IT
DIN EN 27888 ISO 18787 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 + 3 more
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ACCREDIA 00811 Napoli, IT
DIN EN 15763 ISO 4832 ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 + 3 more
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ACCREDIA 00245 Macerata, IT
DIN EN ISO 17294-2 BS EN 15662 DIN EN 16294 DIN EN ISO 16050 DIN EN 14123 + 3 more
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ACCREDIA 00212 Firenze, IT
dbSNP rs1800562, rs1799945, rs1800730, r DIN EN ISO 15549 DIN EN ISO 15587-2 DIN EN ISO 17294-2 DIN ISO 22036 + 3 more
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ACCREDIA 00665 Verona, IT
DIN EN ISO 17294-2 DIN EN 1484 DIN EN 1186-3 DIN EN 13286-47 DIN EN ISO 13164-4 + 3 more
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ACCREDIA 01355 Città della Pieve, IT
DIN EN 27888 DIN EN 13126-19 DIN EN 13657 DIN EN ISO 10523 DIN EN 14346 + 3 more
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ACCREDIA 01246 Ponte, IT
DIN EN ISO 3960 ISO 15214 ISO 21527-1 ISO 21527-2 DIN EN ISO 4833-1 + 3 more
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ACCREDIA 00255 Modena, IT
ISO 4832 DIN EN ISO 4833-1 DIN EN ISO 6888-2 DIN EN ISO 7932 DIN EN ISO 11290-1 + 3 more
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UKAS 4352 Liverpool, GB
DIN EN ISO 15213-2 ISO 11290-1 ISO 11290-2 ISO 21528-2 ISO 6579-1 + 3 more
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ACCREDIA 01664 Livorno, IT
DIN EN ISO 11885 DIN EN ISO 10304-1 DIN EN ISO 17294-2 DIN EN ISO 10304-4 ISO 10304-1 + 3 more
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ACCREDIA 01426 Fano, IT
DIN EN ISO 15587-2 DIN EN ISO 10523 DIN EN ISO 10304-1 DIN EN ISO 17294-2 DIN EN 1484 + 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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