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 00658 Castelnuovo Vomano, IT
DIN ISO 16649-2 DIN EN ISO 4833-1 ISO 11731 DIN EN ISO 6888-1 ISO 16649-2 + 3 more
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DIN EN ISO 11885 DIN EN ISO 15587-2 DIN EN 13657 DIN EN ISO 17294-2 DIN EN 15934 + 3 more
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ISO 4832 ISO 11731 ISO 16649-2 ISO 6222 ISO 7899-2 + 3 more
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UKAS 4007 Scunthorpe, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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Pseudomonas aeruginosa Hepatitis-B-surface-Antigen Hepatitis B-e-Antigen Neisseria gonorrhoeae DNA Rhinovirus RNA + 3 more
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RvA M133 Roosendaal, NL
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UKAS 8621 Chelmsford, GB
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UKAS 9864 Chelmsford, GB
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ACCREDIA 01676 Biassono, IT
ISO 13320 BS EN ISO 3923-1 ASTM E1019-24 ASTM B212-21 ASTM B527-24 + 3 more
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DAkkS D-K-20451-01-00 Bovenden, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO 1) In den CMC sind die erweiterten Messu elektronische Waagen Innen- und Tiefenmaße + 3 more
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ACCREDIA 00552 Catania, IT
DIN EN 12143 DIN EN 61482-2 DIN EN 15959 ISO 660 DIN EN 15475 + 3 more
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ACCREDIA 00231 Susegana, IT
DIN EN 61482-2 DIN EN 15959 DIN EN 16197 UNI EN 16965 UNI EN 17041 + 3 more
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DIN EN ISO 13934-1 DIN EN 13759 DIN EN ISO 4920 DIN EN ISO 9237 DIN EN ISO 12945-1 + 3 more
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ACCREDIA 00230 Perugia, IT
ISO 9231 ISO 660 ISO 5534 ISO 17678 ISO 23319 + 3 more
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ACCREDIA 00204 Modena, IT
ISO 1443 ISO 937 DIN EN 61482-2 ISO 9231 DIN EN 15959 + 3 more
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ACCREDIA 02288 Roma, IT
ETSI EN 319 401 ETSI EN 319 411-1 ETSI EN 319 411-2 ETSI EN 319 412
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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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