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
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Ingenieurgesellschaft Holzberg und Riehemann

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DAkkS D-PL-17201-01-00 Rheinmünster, DE
ISO 17987-6 ISO 17987-7 ISO 16845
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Inotech Meter Calibration Systems

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DAkkS D-K-20838-01-02 Bietigheim, DE
Taupunkttemperatur Railway braking — urban guided transport Railway vehicle body structural requirem Railway bogies — wheelsets and bogies st Elektrische + 3 more
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Institut für Hygiene und Umwelt

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DAkkS D-PL-14095-03-02 Hamburg, DE
DIN 38402-A 12 DIN ISO 5667-5 (A 14) DIN EN ISO 5667-6 (A 15) DIN EN ISO 19458 (K 19) DIN 19643-1 + 3 more
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Institut für Klinische Transfusionsmedizin und Immungenetik Ulm gemeinnützige

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DAkkS D-ML-17347-01-00 Ulm, DE
Basophile Granulozyten Eosinophile Granulozyten Erythrozyten Lymphozyten Leukozyten + 3 more
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Institut für Mikrobiologie der Bundeswehr Zentralbereich Diagnostik

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Bacillus anthracis Antikörper Direkter Coombstest polyvalent Brucella spp. IgG, IgM Antikörper Francisella tularensis-Antikörper polyvalent, IgG, IgM + 3 more
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Institut für Solarenergieforschung GmbH ISFH Calibration and Test Center (CalTeC)

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DAkkS D-K-18657-01-01 Emmerthal, DE
Kurzschlussstrom 0,5 mA 0,1 V Füllfaktor Solarzellen* 25 % 0,01 mW THD U 0,1 % + 3 more
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Institut für Umwelt & Energie, Technik & Analytik e.V. (IUTA)

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DAkkS D-PL-19759-01-05 Duisburg, DE
Erythrozyten im 1,5.10121-1 DIN EN ISO 10121-2 DIN EN ISO 16890-1 DIN EN ISO 16890-2 DIN EN ISO 16890-3 + 3 more
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Institute for International Product Safety

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DAkkS D-PL-19125-01-00 Bonn, DE
DIN EN IEC 60255-1 VDE 0435-300 DIN EN 60255-151 VDE 0435-3151 IEC 60255-151 + 3 more
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Intertek Caleb Brett GERMANY

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DAkkS D-PL-11307-01-00 Hamburg, DE
DIN EN ISO 12185 ASTM D 4052 DIN EN ISO 3405 ASTM D 86 DIN EN 13016-1 + 3 more
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Intertek Consumer Goods

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DAkkS D-PL-14184-01-02 Fürth, DE
IEC 62321-2 DIN EN 61340-4-4 DIN EN 12472 DIN EN 16711-1 DIN EN 1264-5 + 3 more
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Intertek Deutschland

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DAkkS D-PL-12085-01-01 Kaufbeuren, DE
IEC 61000-3-2: 2014 IEC 61000-3-3 IEC 61000-3-11: 2017 IEC 61000-3-12: 2011 IEC 61000-4-2: 2008 + 3 more
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Isabellenhütte Heusler

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DAkkS D-K-19500-01-01 Dillenburg, DE
Gleichspannung 1 Gleichstrom- und Nieder- 10 mV > 10 V Gleichstromstärke 1 > 1mA + 3 more
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Isserstedt Prüfmaschinen

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DAkkS D-K-15061-01-00 Nettetal, DE
Härte* 20 HRA Härtevergleichsplatten 20 HRB 20 HRC 40 HRD + 3 more
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JUMO GmbH & Co. KG Kalibrierlabor

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DAkkS D-K-15129-01-01 Fulda, DE
Temperaturmessgrößen (Härteskalen HV0,01 Widerstandssensor * direktanzeigende > 200 °C Messumformer mit + 3 more
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Janner Waagen GmbH Zweigniederlassung Weiden

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DAkkS D-K-21494-01-00 Weiden i. d. OPf., DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO elektronische Waagen Innen- und Tiefenmaße Konventioneller + 2 more
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Johann Fischer Aschaffenburg Präzisionswerk

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DAkkS D-K-18423-01-00 Aschaffenburg, DE
Ebenheitsabweichung verkörperungen z.B. platten nach DIN 876:1984 Geradheitsabweichung ebener Flächen, z.B. + 3 more
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Johs. Boss

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DAkkS D-K-21417-01-00 Albstadt, DE
(ein- und mehrgängige winde mit geradlinigen unsymmetrischem Profil 0,5 mm bis 6 mm) Außengewinde Nenndurchmesser + 3 more
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Julius-Maximilians-Universität Würzburg Institut für Hygiene und Mikrobiologie

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DAkkS D-ML-13135-01-00 Würzburg, DE
Obligat anaerobe Bakterien mikroaerophile Bakterien ESBL-Bildner (multiresistente gramnegative säurefeste Stäbchen + 3 more
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Julius-Maximilians-Universität Würzburg Institut für Virologie und Immunbiologie

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DAkkS D-ML-13135-03-01 Würzburg, DE
CD45 Percp+CD16+56+CD3 CD4 CD45 Percp+CD4+CD8 Adalimumab Anti-Adalimumab Antikörper + 3 more
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K. A. Schmersal

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DAkkS D-PL-12119-01-00 Wuppertal, DE
DIN EN IEC 60947-5 IEC 60947-5-1 IEC 60947-5-2 DIN EN 60947-5 IEC 60947-5-3 + 3 more
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K. Meyer R.M.S.

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DAkkS D-K-19781-01-02 Hagen, DE
Temperaturmessgrößen Widerstandsthermometer* Railway braking — urban guided transport Railway vehicle body structural requirem Widerstandssensor * + 3 more
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KB Prüftechnik

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DAkkS D-K-17233-01-00 Hochdorf-Assenheim, DE
Härteprüfmaschinen nach 100 HBW Brinell- und 226 HBW messeinrichtungen von Härteprüfmaschinen + 3 more
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KCH Kalibriercentrum Hannover

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DAkkS D-K-18972-01-01 Hemmingen, DE
eingängige zylindrische Einstellnormale Lehrdorne Durchmesser 1 mm Prüfstifte + 3 more
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KLG Krankenhaus-Labor-Gesellschaft

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DAkkS D-ML-13391-01-00 Frankfurt am Main, DE
basophile, eosinophile, Granulozyten Differenzialblutbild Erythrozyten Erythrozytenverteilungsbreite (RDW) + 3 more
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KRIWAN Testzentrum

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DAkkS D-PL-12091-01-01 Forchtenberg, DE
IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 IEC 61000-4-6: 2013 + 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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