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
3,687 Accredited labs
21 Countries

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ALDARIM

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COFRAC 1-6043 Sainte Helene Du Lac, FR
NF X 43-050 NF X 43-269 NF X43-050 (parties utiles de ISO 16000-7 FD X 46-033
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ACCREDIA 00208 Reggio Emilia, IT
dbSNP rs1800562, rs1799945, rs1800730, r ISO 4832 ISO 21527-1 DIN EN ISO 4833-1 DIN EN ISO 6579-1 + 3 more
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COFRAC 1-6425 Bagnols Sur Ceze, FR
NF X 43-257 NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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ALIANIS

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COFRAC 1-6842 Beynes, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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ALS

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COFRAC 1-5853 Saint-Pierre-De-Chandieu, FR
ISO 22262-1 NF X 43-257 NF X 43-050 NF X 43-269 NF X43-050 (parties utiles de + 2 more
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DAkkS D-PL-14594-01-01 Hamburg, DE
DIN EN 12879 DIN EN 12880 DIN EN ISO 17892-4 DIN 18123 DIN EN ISO 11885 + 3 more
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ALS France

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COFRAC 1-1364 Saint-Quentin-Fallavier, FR
DIN EN 27888 DIN ISO 16000-3 DIN ISO 16000-6 DIN EN ISO 16000-9 DIN EN ISO 11885 + 3 more
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COFRAC 1-5578 Villebon-Sur-Yvette, FR
DIN EN 27888 ISO 4832 ISO 15214 ISO 21527-2 DIN EN ISO 6579-1 + 3 more
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ALS Germany

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DAkkS D-PL-14162-01-03 Altenberge, DE
> 660 HABP2-Gen (c.1601G>A) rs7080536 ASTM E 648 DIN EN 61646 ISO 11948-1 + 3 more
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ALS Italia

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ACCREDIA 00141 Zoppola, IT
DIN EN 27888 ISO 18787 ISO 4831 ISO 4832 ISO 15214 + 3 more
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ALS Italia

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ACCREDIA 00597 Moncalieri, IT
DIN EN 27888 ISO 18787 ISO 4831 ISO 4832 ISO 15214 + 3 more
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UKAS 1282 Templeborough, GB
ISO 4832 ISO 11290-1 ISO 11290-2 ISO 21528-1 ISO 22964 + 3 more
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COFRAC 1-1630 Crespin, FR
Railway driver warning systems — braking Railway vehicle dynamics — on-track test DIN EN 50500 ISO 7731
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ACCREDIA 01195 Savigliano, IT
Railway running behaviour and bogies — t Railway vehicle body structural requirem Railway bogies — wheelsets and bogies st Railway equivalent conicity measurement Railway braking — thermal analysis (EN 1 + 3 more
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COFRAC 1-5603 Petite-Foret, FR
Railway braking — urban guided transport Railway braking — urban guided transport Railway high-speed braking performance ( Railway brake friction material characte Railway braking — wheel slide protection + 3 more
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DAkkS D-PL-11003-08-01 Netphen, DE
DIN EN 13260 DIN EN 13261 DIN EN 13262 DIN EN 13103-1 DIN EN 13979-1 + 3 more
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DAkkS D-PL-11003-01-00 Hennigsdorf, DE
Sound power level determination — genera Sound power — engineering methods for sm Sound power — in-situ using reference so Sound intensity — scanning method (ISO 9 Occupational noise exposure measurement + 3 more
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DAkkS D-PL-11003-07-00 Görlitz, DE
Railway braking — thermal analysis (EN 1 Railway wheel squeal and curve noise (EN DIN 27201-5 DIN 25043-1 DIN 25043-2 + 3 more
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ENAC LE808 Tres Cantos, ES
Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) Railway braking — thermal analysis (EN 1 Influenza A/H1-2009 DIN EN 50155 + 3 more
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AMAP SpA

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ACCREDIA 01670 Palermo, IT
DIN EN ISO 11885 DIN EN ISO 10304-1 DIN EN ISO 10304-4 ISO 10304-1 DIN EN ISO 9308-2 + 3 more
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ACCREDIA 01267 Castano Primo, IT
DIN EN 27888 DIN EN ISO 15587-2 DIN EN 13657 DIN EN ISO 10523 DIN EN 14346 + 3 more
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DAkkS D-K-15032-02-00 Weiterstadt, DE
Machinery vibration — industrial machine Railway brake — magnetic track brakes (U Railway maintenance — track geometry (EN Länge Rundheitsabweichung + 3 more
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AMIANT'AIR

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COFRAC 1-6507 Vandoeuvre Les Nancy, FR
DIN EN ISO 11689 NF X 43-257 NF X 43-298 NF X 43-050 NF X 43-269 + 3 more
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COFRAC 1-7345 Montelimar, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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AMIAT

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ACCREDIA 00734 Torino, IT
DIN EN ISO 3679 EN 1365-2 DIN EN 13126-19 DIN EN 15408 DIN EN 13657 + 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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