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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ISO 11294 ISO 4149 ISO 20481 ISO 6673 ISO 10470 + 1 more
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DIN EN 27888 NF EN ISO-15587-2 ISO 23696-1 ISO 23695 UNI ISO 23697-1 + 3 more
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DEPURAZIONI BENACENSI S.c.r.l.

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ACCREDIA 01161 Peschiera del Garda, IT
ISO 15705 ISO 23696-1 ISO 23695 UNI ISO 23697-1 UNI 11757 + 3 more
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DESIDERIO

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ACCREDIA 00959 Capaccio Paestum, IT
DIN EN ISO 4833-1 ISO 4833-1 ISO 18593 APAT CNR IRSA 2060 Man 29 2003
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DEUTZ Aktiengesellschaft Kalibrierstelle für physikalische Größen

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Railway wheelset design forces (UIC 519) - Gleichspannung - Gleichstromstärke - Gleichstromwiderstand - Wechselspannung + 3 more
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COFRAC 1-5996 Saint Germain, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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BELAC 409-TEST Maldegem, BE
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DIMETEC Elektro GmbH Labor für elektrische Meßtechnik

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0 mV  U < 330 mV 330 mV  U < 3,3 V 3,3 0 mV  U < 120 mV 120 mV  U < 1,2 V 1,2 0 A  I  330 A 330 A < I  3,3 mA 3, 20 A  I  1025 A 20 A  I  1025 A F = 50 Hz + 3 more
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DIRECCIÓN GENERAL DE LA GUARDIA CIVIL. SERVICIO DE CRIMINALÍSTICA

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ENAC LE776 Madrid, ES
UNE-EN ISO 11885 SM 4500-H+ B SM 5210 D SM 2130 B SM 5220 D + 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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