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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ACCREDIA 00602 Pontedera, IT
ISO 4832 ISO 21527-1 ISO 21527-2 ISO 11731 ISO 16649-2 + 3 more
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ISO 4832 DIN EN ISO 6579-1 ISO 11731 DIN EN ISO 6888-1 ISO 16649-2 + 3 more
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ACCREDIA 00736 Bologna, IT
ISO 18787 ISO 4832 ISO 15214 DIN EN ISO 4833-1 DIN EN ISO 6579-1 + 3 more
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ACCREDIA 00671 Cosenza, IT
ISO 4832 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 11290-1 DIN EN ISO 11290-2 + 3 more
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ACCREDIA 01716 Paternò, IT
DIN EN 27888 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 18593 DIN EN ISO 10523 + 3 more
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ACCREDIA 00909 Roma, IT
DIN EN 27888 ISO 4832 DIN EN ISO 4833-1 DIN EN ISO 21528-2 DIN EN ISO 15587-2 + 3 more
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ACCREDIA 02395 Foggia, IT
ISO 11731 ISO 6222 ISO 9308-1 ISO 14189 ISO 16266 + 3 more
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ACCREDIA 01159 Roma, IT
ISO 4832 ISO 11731 DIN EN ISO 6888-1 ISO 16649-2 ISO 21528-2 + 3 more
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ACCREDIA 01811 Pavona di Albano Laziale, IT
DIN EN ISO 11885 DIN EN ISO 10304-1 DIN EN 13284-1 ISO 10304-1 DIN EN ISO 15587-1 + 3 more
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ACCREDIA 00688 Fidenza, IT
ISO 18787 ISO 15214 ISO 21527-1 ISO 21527-2 DIN EN ISO 11290-1 + 3 more
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DAkkS D-PL-14158-01-02 Braunschweig, DE
DIN EN 27888 DIN EN 12880 DIN EN ISO 19458 DIN 18125-2 DIN 19682-2 + 3 more
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ACCREDIA 01855 Nuoro, IT
ISO 21527-2 DIN ISO 16649-2 DIN EN ISO 6579-1 DIN EN ISO 6888-2 DIN EN ISO 7932 + 3 more
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ACCREDIA 01403 Orbetello, IT
DIN EN ISO 10523 DIN EN 14869-2 DIN EN 25814 DIN EN 15634-1 ISO 10523 + 3 more
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DAkkS D-ML-13452-02-00 Berlin, DE
Creatinin Digitoxin Digoxin Cortisol Glucose + 3 more
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DAkkS D-ML-13452-10-00 Freiburg, DE
Ethanol Absolutdruck tration von Harnsäure tration von Harnstoff (ESD) + 3 more
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DAkkS D-ML-13452-01-01 Ingelheim, DE
Ethanol Creatinin Digitoxin Digoxin HbA1c + 3 more
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DAkkS D-ML-13322-01-00 Karlsruhe, DE
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DAkkS D-ML-19774-01-01 Gießen, DE
Digitoxin Digoxin HbA1c Aldosteron Cortisol + 3 more
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DAkkS D-ML-13031-01-01 St. Ingbert, DE
Absolutdruck tration von Harnsäure tration von Harnstoff (eingängige zylindrische Digitoxin + 3 more
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ACCREDIA 00752 Aragona, IT
ISO 18787 ISO 4832 ISO 15214 ISO 21527-1 ISO 21527-2 + 3 more
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ACCREDIA 02016 Castelfidardo, IT
ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 + 3 more
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DAkkS D-K-18784-02-00 Hessisch Oldendorf, DE
Railway brake — magnetic track brakes (U Elektrische Messgrößen - Hochspannungsmessgrößen nur Vor-Ort-Kalibrierungen − Temperatur-Blockkalibratoren + 3 more
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UKAS 0726 Garretts Green, GB
(HSG 264, 2012) staining based on HSG 248 (PCM) based on HSG 248 (PCM) based on HSG 248) (HSG 248) – 2021 )
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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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