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 00841 Grugliasco, IT
DIN EN ISO 28139 EN ISO 16119-2 EN ISO 16119-3 EN ISO 19932-1 EN ISO 19932-2 + 3 more
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DIN EN ISO 11885 NF EN ISO 11885 COI/T.20/Doc n 35/rev 1 2017 COI/T.20/Doc n 34/rev 1 2017 COI/T.20/Doc n 19/rev 5 2019 + 3 more
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DAkkS D-PL-12030-01-02 Plattling, DE
VDI/VDE/DGQ 2618 ISO 16750-5 ISO 20653 DIN EN 50155 VDE 0115-200 + 3 more
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UKAS 0327 Hawarden, GB
IEC 61010-1 : 2010 IEC 60529: 1989 DIN EN 13463-1 DIN 50104 DIN EN 13012 + 3 more
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ACCREDIA 00039 Castel Goffredo, IT
DIN EN 13759 DIN EN ISO 3071 DIN EN ISO 14184-1 DIN EN ISO 12945-1 DIN EN ISO 12945-2 + 3 more
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ACCREDIA 00009 Bollate, IT
Salt spray / neutral salt fog test (ISO ISO 5658-2 ISO 5660-1 DIN EN ISO 5659-2 DIN EN ISO 9239-1 + 3 more
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ACCREDIA 00953 Tuscania, IT
DIN ISO 16649-2 DIN EN ISO 6579-1 DIN EN ISO 11290-1 DIN EN ISO 11290-2 DIN EN ISO 21528-2 + 3 more
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COFRAC 1-0300 Marne La Vallee Cedex 2, FR
ISO OMIM# 614024 DIN EN ISO 2813 DIN EN 60601-1-10 DIN EN ISO 16826 + 3 more
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COFRAC 1-1542 Saint Martin D'Heres, FR
Salt spray / neutral salt fog test (ISO OMIM# 614024 DIN EN 1191 DIN EN 12046-1 DIN EN 12046-2 + 3 more
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COFRAC 1-0304 Nantes, FR
DIN EN ISO 3126 DIN EN 17150 DIN EN ISO 13259 DIN EN ISO 1133-1 DIN EN ISO 11357-6 + 3 more
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DAkkS D-ML-13325-01-00 Cottbus, DE
Ethanol Creatinin Digitoxin Digoxin Aldosteron + 3 more
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DIN 75200 DIN EN 1371-1 DIN EN 1371-2 DIN EN 62271-103 DIN EN ISO 7971-3 + 3 more
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DAkkS D-K-18066-01-00 Hechingen, DE
Vickers hardness test (ISO 6507) Railway braking — urban guided transport Railway overhead lines — pantograph head auch Vor-Ort Kalibrierung Taupunkttemperatur + 3 more
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ENAC LE3006 Atarfe, ES
UNE 320001
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COFRAC 1-6108 Pantin, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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UKAS 8607 Salterhebble, GB
Neurophysiology | Electromyography (EMG) Evoked Potentials | Diagnosys Espion Evoked Potentials | Potentials (SEP) Evoked Potentials | MSLT Evoked Potentials | Optima Xltek
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UKAS 8992 Lindley, GB
Ethanol Digoxin Cortisol Glucose CA 125 + 3 more
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UKAS 0654 Norwich, GB
DC Resistance Hydraulic pressure (gauge) DC VOLTAGE Generation (continued) Measurement (continued) + 3 more
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UKAS 8114 Cambridge, GB
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UKAS 8840 Cambridge, GB
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UKAS 20070 Cambridge, GB
routine RESPONSE: complex Routine Hearing Services: Otoscopy Hearing Diagnostic History Taking + 3 more
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UKAS 8027 Cambridge, GB
Digoxin HbA1c Cortisol Glucose Biotinidase + 3 more
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UKAS 23111 Trumpington, GB
Cambridge IVF Semen | C.IVF/LabSOP/Diagnostic/5 Semen | C.IVF/LabSOP/Diagnostic/6 Semen | C.IVF/LabSOP/Diagnostic/2 Semen | C.IVF/LabSOP/Diagnostic/10 + 3 more
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UKAS 0789 Great Dunmow, GB
Total Harmonic Distortion FREQUENCY Sound Calibrators based: Microphones + 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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