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 01827 Roma, IT
ETSI EN 319 401 ETSI EN 319 411-1 ETSI EN 319 411-2 ETSI EN 319 412
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Sedus Stoll

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DAkkS D-PL-17145-01-00 Dogern, DE
ISO 21527-1 DIN EN 12102-2 DIN EN 12520 DIN EN 1335-1 DIN EN 15372 + 3 more
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UKAS 2210 Wilton International, GB
(HSG 248) – 2021 (PCM) based on HSG 248 DI/AN/ME/025 based on HSG 248 DI/AN/ME/001 based on HSG 248 DI/AN/ME/026 based on HSG 248
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DAkkS D-K-21043-01-00 Regenstauf, DE
Tensile testing of metallic materials (I Vickers hardness test (ISO 6507) Railway braking — urban guided transport Temperaturmessgrößen - Direktanzeigende Thermometer + 3 more
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Sensors Europe

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DAkkS D-K-22209-02-01 Erkrath, DE
Railway brake — magnetic track brakes (U Railway brakes — electropneumatic brakes Gaskonzentration Abgasmessgeräte für − Abgasmessgeräte für Kompressionszündun + 1 more
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Sepack Lab

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ACCREDIA 01594 Montebello della Battaglia, IT
DIN EN 1186-2 DIN EN 1186-3 DIN EN 13286-47 DIN EN 13130-1 DIN EN ISO 11664-5 + 3 more
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UKAS 9301 Abergavenny, GB
Quantification of: | Roche Cobas 8000 sy Seren Laboratory Services Serum / plasma Urate | Enzymatic colouri Capillary Plasma | → NAD Serum / plasma Vitamin B12 | Chemilumine + 3 more
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ServiceCal

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UKAS 0152 Heywood, GB
CFH-Gen, Macula-Degeneration (indirekter Coombstest), Titer, Direkter Hydraulic pressure (gauge) DC VOLTAGE AC CURRENT + 3 more
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BELAC 270-TEST Anderlecht, BE
Afgeleid van ISO 1442 – Dérivée de l'ISO Afgeleid van ISO 936 – Dérivée de l'ISO Afgeleid van ISO 1443 – Dérivée de l'ISO Afgeleid van ISO 937 – Dérivée de l'ISO Afgeleid van AOAC - Dérivée de AOAC Inte + 3 more
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ACCREDIA 01985 Lamezia Terme, IT
ISO 4832 DIN EN ISO 4833-1 DIN EN ISO 21528-2 DIN EN ISO 18593 DIN EN ISO 19458 + 3 more
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ACCREDIA 00809 Casagiove, IT
ISO 4832 DIN EN ISO 4833-1 DIN EN ISO 17141 DIN EN 13284-1 ISO 11731 + 3 more
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ACCREDIA 02067 Termini Imerese, IT
DIN EN 13657 NF EN ISO 15587-2 et NF EN ISO 11885 NF EN ISO 11885 UNI EN 13657 CNR IRSA 2 Q 64 Vol 2 1984/Notiziario IR
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ACCREDIA 00854 Genova, IT
DIN EN 13126-19 DIN EN ISO 15587-2 DIN EN 13657 DIN EN 14346 DIN EN ISO 10304-1 + 3 more
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ACCREDIA 00963 Cassano d'Adda, IT
DIN EN ISO 19458 ISO 11731 ISO 6222 ISO 7899-2 ISO 9308-1 + 3 more
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ACCREDIA 01826 Castel Goffredo, IT
ISO 23696-1 ISO 23695 UNI ISO 23697-1 ISO 23697-1 APAT CNR IRSA 2060 Man 29 2003 + 3 more
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ACCREDIA 00889 Roma, IT
ASTM E1588-20 en 60
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UKAS 9157 Sheffield, GB
LENGTH ANGLE Depth Surface plates Plain plug gauges (parallel) + 3 more
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UKAS 8509 Sheffield, GB
Ethanol Digoxin Cortisol Glucose AFP + 3 more
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UKAS 8448 Barnsley, GB
Ethanol Digoxin HbA1c Cortisol Glucose + 3 more
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UKAS 9623 Rotherham, GB
Ethanol Digoxin HbA1c Cortisol Glucose + 3 more
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UKAS 8093 Western Bank, GB
Cytomegalovirus Mycobacterium leprae Iron Histopathological examination activities Connective tissue + 3 more
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UKAS 8013 Sheffield, GB
Audiology | Adult Hearing Services: Audiology | History Taking Audiology | Vestibular: Audiology | Caloric Irrigation Test Audiology | Paediatric Audiology Service + 3 more
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UKAS 10139 Western Bank, GB
Ethanol Cortisol Glucose Acylcarnitine Biotinidase + 3 more
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UKAS 8494 Sheffield, GB
AFP CEA CYFRA 21-1 Gentamicin Myoglobin + 3 more
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UKAS 8508 Sheffield, GB
Ethanol Cortisol Glucose Gentamicin Insulin + 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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