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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ENAC LC10.164 Prat de Llobregat, ES
(500 ± 50) mPa · s (12500 ± 1250) mPa ·
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ENAC LC10.091 Cabrils, ES
2 · 10-6 mol/mol  C  100 · 10-6 mol/mo
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INTERCOMMUNALE D'ETUDE ET DE GESTION (I.E.G.) SC - Laboratoire SHA

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BELAC 120-TEST Mouscron, BE
ISO 6222 ISO 7899-2 ISO 9308-1 ISO 14189 ISO 16266 + 3 more
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COFRAC 1-1296 Heudebouville, FR
DIN EN ISO 12952-1 DIN EN ISO 13934-1 DIN EN 13759 DIN EN ISO 105-X12 DIN EN ISO 14184-1 + 3 more
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ENAC LE2322 Bilbao, ES
ID116 ASTM D 4052 ASTM D 5191 ASTM D 5453 ASTM D 381 + 3 more
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ACCREDIA 00151 Lastra a Signa, IT
DIN EN ISO 17294-2 DIN EN 1122 DIN EN 1186-1 DIN EN 1186-3 DIN EN 12472 + 3 more
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ACCREDIA 00774 Fermo, IT
ISO 4832 ISO 15214 DIN EN ISO 6579-1 DIN EN ISO 7932 ISO 11731 + 3 more
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ENAC LE2801 Consuegra, ES
OIV-MA-AS2-01 OIV-MA-AS2-03B OIV-MA-AS313-26 OIV-MA-AS313-25 OIV-MA-AS311-10 + 2 more
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IPH Institut "Prüffeld für elektrische Hochleistungstechnik"

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DAkkS D-PL-12107-01-00 Berlin, DE
Railway braking — urban guided transport - Gleichspannung - Gleichstromwiderstand - Wechselstromstärke Messsysteme + 3 more
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UKAS 7880 Bentalls, GB
Ethanol Digoxin Cortisol Glucose AFP + 3 more
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UKAS 33801 Chelmsford, GB
BS RHAEM LP 5 using Sysmex BS RHAEM LP 1 using thick film BS COAG LP 3 BS COAG PR 7 BS COAG PR 8 + 3 more
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ACCREDIA 02372 Aprilia, IT
IEC 15408-1 IEC 18045 IEC 18367 IEC 20543 IEC 20004
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IRCM - ISTITUTO RICERCA CONTROLLO MATERIALI

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ACCREDIA 01199 Solbiate Arno, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN ISO 8493 ASTM E 8 ISO 6506-1 + 3 more
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IREN ACQUA REGGIO

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ACCREDIA 02155 Reggio Emilia, IT
DIN EN ISO 11885 DIN EN ISO 15587-2 DIN EN ISO 10304-1 DIN EN 1484 ISO 11731 + 3 more
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ACCREDIA 00514 Genova, IT
DIN EN 12880 DIN EN 13657 DIN EN 14346 DIN EN ISO 17294-2 DIN EN 13137 + 3 more
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COFRAC 1-7208 Nancy, FR
DIN EN 27888 DIN EN 13126-19 DIN EN ISO 10523 DIN EN ISO 16911-1 DIN EN 13284-1 + 3 more
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IRO GmbH Oldenburg Prüflabor

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DAkkS D-PL-11107-02-00 Oldenburg, DE
IL1B C3953T dbSNP rs1143634, IL1RA T2010 DIN EN 295-3 DIN 19523 DIN EN 14741 DIN EN 295-3 + 3 more
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IRTEC SRL ISTITUTO RICERCHE TECNOLOGICHE E COLLAUDI

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ACCREDIA 02151 Trezzo sull'Adda, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN ISO 17637 DIN EN ISO 7438 DIN EN ISO 4136 + 3 more
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ISEGA Umweltanalytik

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DAkkS D-PL-17767-01-03 Hanau, DE
DIN EN 12879 DIN EN ISO 19458 DIN EN 12316-1 DIN 18125-2 DIN 19682-2 + 3 more
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DAkkS D-PL-14160-01-01 Aschaffenburg, DE
HABP2-Gen (c.1601G>A) rs7080536 FSHB Polymorphismus rs10835638 rs11887534 (NC_012920: m.4920-5505), ND3, MT-ND4 (N ASTM E 648 + 3 more
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DAkkS D-PL-20181-01-01 Münster, DE
20 HR10/60 DIN EN ISO 2813 DIN EN 933-1 DIN EN 1097-3 DIN EN 13964 + 3 more
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DAkkS D-PL-19827-01-00 Hückelhoven, DE
DIN EN 50178: 1998 ISO 21527-1 ISO 21527-2 DIN EN ISO 1172 DIN EN 1013 + 3 more
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ISPRA - Istituto Superiore per la Protezione e la Ricerca Ambientale Centro Nazionale per la Rete nazionale dei laboratori Area Metrologia e Area Biologia

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ACCREDIA 01211 Roma, IT
DIN EN ISO 17294-2 DIN EN 14211 DIN EN 14625 DIN EN 14626 DIN EN 14662-3 + 3 more
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IST Prüflabor

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DAkkS D-PL-18052-01-00 Chemnitz, DE
DIN 18032-3 DIN V 18032-2 DIN EN 1516 DIN EN 1517 DIN EN 1569 + 3 more
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ACCREDIA 00307 Scorzè, IT
ISO 18787 ISO 4832 ISO 15214 ISO 21527-1 ISO 21527-2 + 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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