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
3,963 Accredited labs
21 Countries

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BELAC 432-TEST Liège, BE
IEC 61215 IEC 61730 IEC TS 63163
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ELLAB

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DAkkS D-K-20746-01-00 Bockel, DE
Railway braking — urban guided transport positiver Überdruck Taupunkttemperatur Thermoelemente –100 °C Absolutdruck Pabs + 3 more
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DAkkS D-PL-12086-01-02 Bondorf, DE
DIN EN 50155 VDE 0115-200 IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 + 3 more
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DAkkS D-K-15099-01-01 Königslutter am Elm, DE
Vickers hardness test (ISO 6507) Railway braking — urban guided transport Railway vehicles — specific test require - Gleichspannung - Gleichstromwiderstand + 3 more
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ELSCOLAB nv

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BELAC 711-CAL Beveren-Kruibeke-Zwijndrecht, BE
Dynamic viscosity (mPa · s) / Rotational CIE 1976 L*a*b* colour units / CCSII set CIE 1976 L*a*b* color measuring units / Dynamic viscosity (mPa · s) / Rotationel CIE 1976 L*a*b* kleureenheden / CCSII se + 3 more
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EMCCons RASEK

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DAkkS D-PL-12067-01-02 Ebermannstadt, DE
ISO 16750-5 ISO 20653 DIN EN ISO 6270-2 DIN EN 50155 DIN EN IEC 60068-2-5 + 3 more
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EMCCons RASEK

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DAkkS D-K-12067-01-01 Unterleinleiter, DE
Railway braking — urban guided transport Railway vehicle body structural requirem - Gleichspannung - Gleichstromstärke - Gleichstromwiderstand + 3 more
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EMME.2 SRL

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ACCREDIA 01065 Formigine, IT
ISO 18787 ISO 4832 ISO 15214 DIN ISO 16649-2 DIN EN ISO 4833-1 + 3 more
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ENAC LE313 Alacant, ES
ISO 5667-11 ISO 5667-4 ISO 5667-10 ISO 10694 ISO 10301 + 3 more
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DAkkS D-PL-19334-01-01 Viernheim, DE
DIN EN 50155 IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 + 3 more
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ENAC LC10.206 Sant Cugat del Vallès, ES
200 kg/h ≤ m ≤ 60000 kg/h 200 l/h ≤ Q ≤ 60000 l/h 200 kg/h ≤ m ≤ 30000 kg/h 200 l/h ≤ Q ≤ 30000 l/h 700 Pa ≤ P ≤ 2 MPa + 3 more
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ACCREDIA 00410 Conversano, IT
ISO 4832 ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 DIN EN ISO 4833-1 + 3 more
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ACCREDIA 00391 Francavilla al Mare, IT
OIV-MA-AS313-01 cap 5.2 R2015 OIV-MA-AS313-02 R2015 OIV-MA-AS2-04 R2009 OIV-MA-AS323-04B R2009 OIV-MA-AS2-03B R2012 + 3 more
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ENOCONSULTING

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ACCREDIA 00541 Erbusco, IT
OIV-MA-AS313-02 R2015 OIV-MA-AS2-04 R2009 OIV-MA-AS2-03B R2012 OIV-MA-AS311-02 R2009 OIV-MA-AS313-15 R2011 + 3 more
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ACCREDIA 00341 Alba, IT
BS EN 15662 ISO 11731 ISO 14820-2 UNI EN 15662 OIV-MA-AS313-02 R2015 + 3 more
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ACCREDIA 01675 Capannoli, IT
ISO 11731 ISO 6222 ISO 7899-2 ISO 9308-1 AOAC 2015.05 + 3 more
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ENOPIAVE SRL

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ACCREDIA 00717 Tezze di Piave - Vazzola, IT
BS EN 15662 UNI EN 15662 OIV-MA-AS313-02 R2015 OIV-MA-AS2-04 R2009 OIV-MA-AS2-03B R2012 + 3 more
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ENAC LE2268 Madrid, ES
ISO 7507-4 ISO 12917-1 ISO 7507-4-1995 ISO 12917-1-2002
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ENTIME

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COFRAC 1-5517 Armentieres, FR
DIN EN 27888 DIN EN 13126-19 DIN EN ISO 10523 ISO 10780 DIN EN ISO 16911-1 + 3 more
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ENV Surveys

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UKAS 2794 Brighton, GB
(HSG 248) – 2021 staining based on HSG 248 (PCM) based on HSG 248
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ACCREDIA 01299 Catania, IT
DIN EN ISO 11885 DIN EN ISO 15587-2 DIN EN 13657 DIN EN 14039 DIN EN 15934 + 3 more
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EOLIA

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COFRAC 1-2416 La Ciotat, FR
DIN EN 12469 ISO 14644-3 BS EN ISO 14644-1:2015 NF X 44-201 (Octobre 1984) pour PSM NF S 90-351 + 1 more
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EOS LAB

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ACCREDIA 01017 Foggia, IT
BS EN 15662 UNI EN 15662 APAT CNR IRSA 2030 Man 29 2003 APAT CNR IRSA 2060 Man 29 2003 DM 13/09/1999 SO n 185 GU n 248 21/10/19 + 1 more
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DAkkS D-K-21444-01-01 Niederstetten, DE
Railway brake — anti-slide device (UIC 5 Railway brake — magnetic track brakes (U Railway brakes — conditions for homologa Railway brakes — disc brake pads (UIC 54 Railway brakes — brake performance (UIC + 3 more
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EPL

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ACCREDIA 01138 Fabriano, IT
IEC 61000-4-2: 2008 IEC 61000-4-4: 2012 IEC 61000-4-6: 2013 IEC 61000-6-1 DIN EN 55014-1: 2018 + 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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