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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21 Countries

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LASEM (Laboratoire d'Analyses de Surveillance et d'Expertise de la Marine) Base Navale de Cherbourg

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COFRAC 1-1669 Cherbourg-Octeville Cedex, FR
DIN EN 27888 DIN EN ISO 10523 DIN EN ISO 16703 ISO 13320 DIN EN ISO 10703 + 3 more
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LDA DE L'AIN - Site Agro-Alimentaire

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COFRAC 1-2193 Bourg-En-Bresse Cedex 9, FR
ISO 4832 ISO 15214 ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 + 3 more
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LEL ENVIRONNEMENT

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COFRAC 1-6751 Laneuville-Devant-Nancy, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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LEPBI - Laboratoire d'Expertise des Polluants du Bâtiment et de l'Industrie

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COFRAC 1-2350 Villepinte, FR
DIN 51750-3 DIN EN 15002 NF X 43-050 NF X 43-269 NF X 43-269 – Annexe K + 3 more
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LILANO

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COFRAC 1-2080 Saint-Lo, FR
DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 6888-2 DIN EN ISO 11290-1 + 3 more
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LNE - Laboratoires de Trappes

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COFRAC 1-0606 Trappes Cedex, FR
DIN EN IEC 60942:2018 1000 Hz DIN EN 60068-2-43 DIN EN 60529 DIN EN 62262 DIN EN 60825-1 + 3 more
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LSDIAG

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COFRAC 1-5826 Bezons, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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LSEHL- Site de Venissieux

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COFRAC 1-1531 Venissieux, FR
DIN EN 27888 DIN EN ISO 16212 DIN EN ISO 18415 DIN EN ISO 18416 DIN EN ISO 21149 + 3 more
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LVAD 54 - Laboratoire Vétérinaire et Alimentaire Départemental de Meurthe et Moselle

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COFRAC 1-1122 Malzéville, FR
DIN EN ISO 6579-1 DIN EN ISO 7932 DIN EN ISO 11290-1 DIN EN ISO 11290-2 ISO 18743 + 3 more
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Laboratoire CHRYSOTEC

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COFRAC 1-5569 Saint-Amand-Montrond, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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Laboratoire Départemental d'Analyses des Ardennes (LDA 08)

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COFRAC 1-0885 Hagnicourt, FR
DIN EN 27888 DIN EN ISO 10523 ISO 18743 DIN EN ISO 7393-2 ISO 6222 + 3 more
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Laboratoire MARLE

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COFRAC 1-2417 Nogent, FR
Tensile testing of metallic materials (I DIN EN ISO 6506-1 DIN EN ISO 6507-1 DIN EN ISO 643 DIN EN ISO 6508-1 + 3 more
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LNS

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COFRAC 1-5570 Lille, FR
NF X 43-050 NF X 43-269 NF X 43-050 (parties utiles NF X 43-269 - Annexe K ISO 16000-7 + 1 more
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Laboratoire Orano DA

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COFRAC 1-6708 Saint Paul Trois Chateaux, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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Laboratoire d'Analyses de Surveillance et d'Expertise de la Marine (LASEM)

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COFRAC 1-1083 Toulon Armees, FR
DIN EN 27888 DIN EN ISO 11885 DIN EN ISO 10523 DIN EN 26777 DIN EN ISO 10304-1 + 3 more
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Laboratoire de Microbiologie RD&E

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COFRAC 1-6419 Sainghin-En-Melantois, FR
IEC 60127-5 DIN EN 1040 DIN EN 1650 DIN EN 13727 DIN EN 13624 + 3 more
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Laboratoire de l'Environnement et de l'Alimentation de la Vendée (LEAV)

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COFRAC 1-1064 La Roche-Sur-Yon Cedex 9, FR
DIN EN 27888 ISO 4832 ISO 15214 ISO 21527-2 DIN ISO 16649-2 + 3 more
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MANUMESURE

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COFRAC 1-2000 Meyzieu, FR
DIN EN 13126-19 ISO 10780 DIN EN ISO 16911-1 DIN EN 13284-1 DIN EN 14790 + 3 more
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MANUMESURE

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COFRAC 1-1318 Asnieres Sur Seine, FR
DIN EN 13126-19 ISO 10780 DIN EN ISO 16911-1 DIN EN 13284-1 DIN EN 14790 + 3 more
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MANUMESURE

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COFRAC 1-7496 Asnieres Sur Seine, FR
ISO 10780 NF X43-329 BS EN BS EN ISO 21877:2019 BS EN ISO 16911-1:2013 using IS EN 15058:2017 + 3 more
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MAPE - Métier Environnement

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COFRAC 1-1678 Etupes, FR
DIN EN 13284-1 DIN EN ISO 21877 DIN EN 14791 DIN EN 13211 DIN EN 14385 + 3 more
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MAPE - Métier Environnement

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COFRAC 1-6837 Lievin, FR
DIN EN 13126-19 DIN EN ISO 10523 ISO 10780 DIN EN ISO 16911-1 DIN EN 13284-1 + 3 more
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MARTECH ENVIRONNEMENT

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COFRAC 1-6308 Cachan, FR
NF X 43-262 NF X 43-257 NF X 43-050 NF X 43-269 NF X 43-259 + 2 more
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META PRELEVEMENTS

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COFRAC 1-6126 Escaudain, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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METROPACK

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COFRAC 1-6986 Reims, FR
DIN EN 303-5 DIN EN ISO 12759 ASTM D4169 ASTM D4332 ASTM D5276 + 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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