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
🇩🇪 DIN EN 14531-1 🇬🇧 BS EN 14531-1 🇫🇷 NF EN 14531-1 🇮🇹 UNI EN 14531-1 🇪🇸 UNE EN 14531-1 🇳🇱 NEN EN 14531-1
1,560 Accredited labs
17 Countries

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Sperrin Technical Laboratories

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UKAS 10817 Moneymore, GB
AM01 based on BS EN ISO 4833-1: AM03 based on BS EN ISO 11290- AM05 based on BS ISO 21528-2: AM08 based on BS EN ISO 15213-2:2023 by AM12 based on BS EN + 3 more
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SpineServ

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DAkkS D-PL-13415-02-00 Ulm, DE
DIN EN ISO 9626 ISO 7206-13 ISO 7206-12 ISO 7206-10 ISO 7206-4 + 3 more
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Springfields Fuels

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UKAS 1170 Salwick, GB
LMM2149, ASTM E112-13 by ISO 6507-1 LMM2207, ASTM E112-13 by LMM1862, ASTM E112-13 for to BS EN ISO 6507-1:2018 + 3 more
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St Helena Public Health Laboratory

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UKAS 4564 South Atlantic Ocean STHL1ZZ, SH
FM003 based on ISO 6888- FM004 based on ISO 16649-2:2001 FM006 based on ISO 6579-1:2017+Amd 1:202 FM009 based on ISO 11290-1:2017 2) WM005 based on ISO 9308-2:2012 using + 1 more
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Staatliche Betriebsgesellschaft für Umwelt und Landwirtschaft

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DAkkS D-PL-14420-01-01 Radebeul, DE
DIN 38402-A 13 DIN EN ISO 5667-6 (A 15) DIN EN ISO 5667-1 (A 4) DIN EN ISO 5667-3 (A 21) DIN 38404-C 4 + 3 more
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Staatsbetrieb für Mess- und Eichwesen Eichamt Leipzig Kalibrierlaboratorium

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DAkkS D-K-15137-01-00 Leipzig, DE
Kraft Vibration measuring instruments — requir Sound power — survey method (ISO 3746) 1 kN Railway brake — automatic variable load + 3 more
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Stadt Passau Klinikum Passau Institut für Labor- und Transfusionsmedizin

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DAkkS D-ML-22372-01-00 Passau, DE
Großes Blutbild Kleines Blutbild Erythrozyten Hämoglobin Hämatokrit + 3 more
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Starna Scientific

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UKAS 0659 Hainault, GB
Sealed liquid cells containing prepared from NIST SRM 935a Toluene/Hexane Neutral density glass filters Neutral density glass filter + 3 more
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Steinbeis GmbH & Co. KG für Technologietransfer TQI Metricon Kalibrierservice

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DAkkS D-K-11200-01-00 Gosheim, DE
Lehrdorne Durchmesser 1 mm Lehrringe Prüfstifte Messschieber für 0 mm + 3 more
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Stiebel Eltron GmbH & Co. KG Kalibrierlabor Elektrolabore

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DAkkS D-K-21191-01-01 Holzminden, DE
- Gleichspannung / Messgeräte 1 µV > 330 mV 3,3 V + 3 more
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Stiftung für Pathobiochemie und Molekulare Diagnostik Referenzinstitut für Bioanalytik

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DAkkS D-K-15117-02-01 Hannover, DE
Glucose Plasma, Serum, Plasma 0,5 mmol/L Bilirubin 5 µmol/L Hämoglobin 1,24 mmol/L + 3 more
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Stockmann Prüf- und Qualitätszentrum

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DAkkS D-K-15212-01-01 Leubingen, DE
Parallelendmaße aus 0,5 mm Parallelendmaße aus Keramik nach 0,5 mm Wolframkarbid nach 0,5 mm DIN EN ISO 3650:1999 + 3 more
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Storm Aviation

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UKAS 26223 Little Canfield, GB
TORQUE Hydraulic pressure (gauge)
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Studenroth Präzisionstechnik

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DAkkS D-K-15146-01-01 Schöneck-Kilianstädten, DE
− Parallelendmaße − Durchmesser − Längenmessmittel Railway brake — magnetic track brakes (U − Längenmessgeräte + 3 more
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Städtisches Klinikum Dessau Institut für Klinische Chemie und Laboratoriumsdiagnostik

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DAkkS D-ML-17443-01-00 Dessau-Roßlau, DE
WBC (Leukozyten) RBC (Erythrocyten) HGB (Hb) HCT (Hk) PLT (Thrombozyten) + 3 more
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Suchy Messtechnik

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DAkkS D-K-23061-01-01 Lichtenau, DE
Druck 50 mbar Absolutdruck Pabs > 1,3 bar > 2,5 bar > 0,6 bar + 3 more
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Surrey County Council

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UKAS 0731 Guildford, GB
DIN EN 933-11 DIN EN 1097-6 DIN EN 1097-1 DIN EN 1097-2 DIN EN 933-3 + 3 more
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Swindon Asbestos Surveying

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UKAS 4608 Swindon, GB
(HSG 264, 2012)
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Sychem

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UKAS 25291 Chandler's Ford, GB
parameters and ranges)
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SysKal

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DAkkS D-K-21604-01-00 Steinheim an der Murr, DE
Hexagon Metrology Raumdiagonale von GmbH, Wetzlar, D ≤ 1500 mm Polyworks, Software von InnovMetric, Lindau, D PowerINSPECT, Software + 3 more
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Systems Engineering Kalibrierlaboratorium

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DAkkS D-K-19425-01-01 Stolberg, DE
- Gleichspannung > 0,1 V > 10 V > 100 V - Gleichstromstärke + 3 more
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Sächsisches Institut für die Druckindustrie GmbH -Institut des Vereins POLYGRAPH Leipzig e. V. - Prüflabor

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DAkkS D-PL-11119-01-00 Leipzig, DE
ISO 5-3 ISO 12647-1 ISO 13655
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Sächsisches Textilforschungsinstitut e. V. Prüfstelle

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DAkkS D-PL-11239-01-05 Chemnitz, DE
ISO 3074 DIN EN ISO 1833-4 DIN EN ISO 1833-5 DIN EN ISO 1833-6 DIN EN ISO 1833-7 + 3 more
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T-SQUARED Validair

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UKAS 4264 Co Durham, GB
ISO 14644-3 DIN EN 12469 BS 7989:2001 BS EN ISO 14644-1:2015 DIN EN 14175-3 + 1 more
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TAB Technische Gesellschaft für Analytik und Beratung

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DAkkS D-PL-17142-01-01 Stahnsdorf, DE
DIN ISO 11466 UNE-EN 12880 ÖNORM EN 12457-4 ISO 10523 DIN EN 27888 + 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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