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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Campden BRI (Chipping Campden)

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UKAS 1079 Gloucestershire, GB
IEC 60512-17-1 ISO 18787 ISO 21527-2 ISO 4833-1 ISO 7932 + 3 more
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Campoverde Srl

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ACCREDIA 01371 Milano, IT
ISO 13166 DIN EN ISO 13162 DIN EN ISO 9698 DIN EN ISO 7503-2 DIN EN ISO 11704 + 3 more
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Capone Lab

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ACCREDIA 01233 Milazzo, IT
ISO 21527-2 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6888-2 DIN EN ISO 21528-2 + 3 more
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Cardiff and Vale University Health Board

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UKAS 8985 Cardiff, GB
Ferritin Erythropoietin Folate ABO Measurement + 3 more
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Cardiff and Vale University Health Board

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UKAS 8989 Cardiff, GB
Digoxin Cortisol Glucose Biotinidase Insulin + 3 more
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Cardiff and Vale University Health Board

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UKAS 8987 Cardiff, GB
Helicobacter pylori BK-Virus Cytomegalovirus MSH6 Immunoglobulin A + 3 more
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Carl Zeiss

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DAkkS D-PL-12125-01-01 Oberkochen, DE
DIN EN 61010-1 IEC 61010-1 : 2010 DIN EN 61010-2-091: 2013 IEC 61010-2-091: 2012 IEC 60825-1: 2007 + 3 more
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Carl Zeiss IQS Deutschland

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DAkkS D-K-21703-01-01 Oberkochen, DE
1) In den CMC sind die erweiterten Messu Oberkochen, D Software von Carl Zeiss Industrielle Messtechnik Carl Zeiss Industrielle ≤ 3818 mm + 3 more
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Carl Zeiss Industrielle Messtechnik

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DAkkS D-K-15007-01-01 Oberkochen, DE
Railway braking — urban guided transport Railway vehicle body structural requirem Railway maintenance — track geometry (EN thermometer Pt100 DIN EN ISO 3650:1999 + 3 more
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Carl Zeiss Jena

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DAkkS D-PL-12037-01-02 Jena, DE
DIN EN 50155 VDE 0115-200 VDE 0468-2-1 DIN EN 60068-2-14 DIN EN 60068-2-30 + 3 more
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Carl Zeiss Jena GmbH Kompetenzzentrum Qualität/Kalibrierlabor

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DAkkS D-K-12037-01-01 Jena, DE
Railway maintenance — track geometry (EN Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 und Radsatzmerkmale 22 mm Kalibrierung der 0,01 mm + 3 more
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Casa Environmental Services

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UKAS 7914 Willsbridge, GB
(HSG 264, 2012) Reinspection of identified or suspected
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Caseificio Sociale Manciano Soc. Agr. Coop. - CSM-Lab

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ACCREDIA 00883 Manciano, IT
No 019 based on ISO 5764:2009 based on ISO 13366-2:2006 ISO 14675 ISO 9622 ISO 13366-2 + 3 more
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Cavendish Laboratories

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UKAS 1643 Chelmsford, GB
(cdt), Deletion an Pos 117 (HSG 248) – 2021 (PCM) based on HSG 248 BS 6068-4.12:1998 (withdrawn)
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CeGaT

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DAkkS D-ML-13206-01-01 Tübingen, DE
Mikrosatelliten-Instabilität Hämochromatose (HFE) (SMN1, SMN2) Punktmutation Cys282Tyr BAT-25, BAT-26, NR-21, NR-22, NR27 + 3 more
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Celanese Performance Solutions Belgium bv

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BELAC 708-TEST Mechelen, BE
ISO 1183-1 ISO 1133-1 ISO 11443 ISO 527-1 ISO 179-1 + 3 more
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Celltech srl

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ACCREDIA 02184 Rivoli, IT
EU PHARMA 04/2011
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Cellular Pathology Services

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UKAS 9685 Watford, GB
S 100 PSA CD15 CD45 CD5 + 3 more
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Center for Standardization and Metrology under the Ministry of Economy and Commerce of the Kyrgyz Republic Laboratory of National Standards

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DAkkS D-K-20448-01-00 Bishkek, DE
PRESSURE Resistance thermometers WEIGHING INSTRUMENTS Temperature quantities Liquid-in-glass + 3 more
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Central Laboratories Department Sharjah Municipality

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UKAS 2000 Sharjah, AE
DIN EN 12390-3 DIN EN 12504-1 DIN EN 12390-7 BS 1377-2:2022 BS 1377-9:1990 + 3 more
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Centrale del Latte d'Italia

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ACCREDIA 00183 Firenze, IT
DIN EN ISO 14891 DIN EN ISO 4833-1 DIN EN ISO 21528-2 DIN EN ISO 16634-2 DIN EN ISO 5764 + 3 more
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Centrale del Latte d'Italia

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ACCREDIA 01197 Salerno, IT
DIN EN ISO 4833-1 ISO 4833-1 No 019 based on ISO 5764:2009 based on ISO 13366-2:2006 ISO 14675 + 3 more
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Centre Belge d’Étude et d’Expertise de l’Eau ASBL CEBEDEAU

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BELAC 353-TEST Liège, BE
ISO 6878 based on BS EN 872:2005 ISO 11732 ISO 13395 FD T 90-112 + 3 more
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Centre Technique des Matériaux Naturels de Construction (CTMNC)

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COFRAC 1-0143 Clamart, FR
DIN EN 12664 DIN EN 1926 DIN EN 12372 DIN EN 1936 DIN EN 772-11 + 3 more
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Centre de Recherches, de Mesures et d'Essais – SG PAM

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COFRAC 1-7023 Pont-A-Mousson Cedex, FR
DIN EN ISO 6506-1 ISO 37 DIN EN 1074-2 ISO 48-4 ISO 48-2 + 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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