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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NF X 43-257 NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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ACCREDIA 00253 Conselve, IT
DIN EN 15621 DIN EN 15111 ISO 6885 ISO 18787 ISO 4831 + 3 more
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nach DIN EN ISO 3650:1999 Laktoseintoleranz, 13910 DIN EN ISO 6887-5 ASTM E 23-18 ASTM E 10-18 + 3 more
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UKAS 23361 Leigh, GB
DIN EN 1629 DIN EN 1026 DIN EN 1027 DIN EN 12211 DIN EN 12600 + 3 more
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DIN EN ISO 19458 DIN 19682-2 DIN ISO 16000-3 DIN ISO 16000-6 DIN EN ISO 1523 + 3 more
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DIN EN ISO 21571 ISO 21570 ISO 21571 SFN DTU n.69 r.0 2024
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Sound intensity — scanning method (ISO 9 Vibration measuring instruments — test m Vibration measurements near traffic — me Vibration measurements near traffic — ev messeinrichtungen von + 3 more
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ACCREDIA 00682 Catanzaro, IT
ISO 18787 ISO 4832 ISO 21527-1 ISO 21527-2 DIN EN ISO 4833-1 + 3 more
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ACCREDIA 00691 Napoli, IT
Hand-arm vibration — practical guidance Whole-body vibration — evaluation of hum DIN EN ISO 21528-2 DIN EN 13126-19 DIN EN 14039 + 3 more
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ISO 5667-10 ISO 16308 on UNE-EN-ISO 6468:1996 on BS ISO 17289:2014 ISO 21676 + 3 more
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ACCREDIA 00847 Andria, IT
DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 11290-1 DIN EN ISO 11290-2 DIN EN ISO 18593 + 3 more
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OIV-MA-AS2-01 OIV-MA-AS313-26 OIV-MA-AS311-10 OIV-MA-AS312-03A OIV-MA-AS323-04B + 3 more
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COFRAC 1-6376 Geispolsheim, FR
NF X 43-257 NF X 43-298 NF X 43-050 NF X 43-269 ISO 16000-7 + 1 more
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DAkkS D-K-19158-01-00 Stuttgart, DE
- Gleichspannung - Gleichstromstärke - Gleichstromwiderstand >100 Ω >100 kΩ + 3 more
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ACCREDIA 01329 Pavia, IT
IEC 60068-2-64 DIN EN 15129 IEC 60068-2-57 IEC 62271-207 IEC 60068-3-3 + 2 more
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COFRAC 1-1147 Sainte-Croix-En-Plaine, FR
ISO 4832 ISO 15213 ISO 15214 ISO 21527-1 ISO 21527-2 + 3 more
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DIN EN ISO 10523 DIN EN ISO 10390 DIN EN 12457-2 ISO 10523 ISO 15705 + 2 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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ISO 18787 ISO 4832 ISO 15214 ISO 21527-1 ISO 21527-2 + 3 more
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ISO 21527-1 ISO 21527-2 DIN EN ISO 4833-1 DIN EN ISO 7932 DIN EN ISO 11290-1 + 3 more
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ENAC LE2182 Coslada, ES
ISO 18787 ISO 7251 BS ISO 6731:2010 AOAC 994.10 ISO 16634-1 + 3 more
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COFRAC 1-2465 Aix-En-Provence, FR
DIN EN ISO 16212 DIN EN ISO 21149 DIN EN ISO 11930 DIN EN ISO 11646 DIN EN ISO 12625-8 + 3 more
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COFRAC 1-1488 Saverne, FR
DIN EN 27888 DIN EN 12880 DIN EN ISO 11885 DIN EN ISO 10523 DIN EN 1484 + 3 more
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DAkkS D-PL-14251-01-00 Hamburg, DE
DIN 10955 EN 1230-2 DIN EN 10229 DIN EN 16320 DIN EN 1230-1 + 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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