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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Horiba Europe

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0,6 bar ver Überdruck p e * Absolutdruck p abs 100 mbar > 70 mbar Gaskonzentration + 3 more
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Hottinger Brüel & Kjaer

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Übertragungsmaß von Messmikrofonen oder Freifeld-Leerlauf- 20 Hz Freifeld -Übertragungsmaß Vorverstärker, nach IEC + 3 more
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Humanetics Europe

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DAkkS D-K-18446-01-01 Rheinmünster, DE
Kraft 500 N Absolutdruck p * Kraftaufnehmer * 0,5 kN Mehrkomponenten Kraft 0,1 kN Kraftmessgeräte 0,5 kN + 3 more
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HyGES, Gesellschaft für Hygieneberatung und -analytik

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DAkkS D-PL-13181-01-01 Mönchengladbach, DE
DIN ISO 5667-5 (A 14) DIN EN ISO 19458 (K 19) DIN 19643-1 DIN EN ISO 7887 (C 1) DIN 38404-C 4 + 3 more
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Hydrodata

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DIN EN ISO 5667-1 (A 4) DIN 38402-A 12 DIN 38402-A 13 DIN 38402-A 15 DIN EN ISO 5667-3 (A 21) + 3 more
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Hydrotechnik

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DAkkS D-K-15045-01-01 Limburg a. d. Lahn, DE
Negativer und Positiver Überdruck p e > 0,015 bar Überdruck p (ein- oder mehrgängige + 3 more
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HygCen Germany

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DAkkS D-PL-18818-02-02 Schwerin, DE
DIN EN ISO 10993-1 DIN EN ISO 10993-5 DIN EN ISO 17405 ISO 10993-23 DIN EN ISO 10993-18 + 3 more
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Hygiene Nord

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DAkkS D-PL-18411-01-04 Greifswald, DE
DIN EN ISO 10993-5 DIN EN ISO 10993-1 DIN EN ISO 11737-2 DIN EN 1040 DIN EN IEC 60601-2-75 + 3 more
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Hygiene-Institut AYSID

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DIN 1946-4 DIN EN 13098 DIN EN ISO 17141 ISO 14644-3 DIN 12980 + 1 more
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Häfner Gewichte GmbH MASSCAL - Kalibrierlaboratorium

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Höntzsch

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Strömungsgeschwindigkeit von Gasen 0,1 m/s Volumendurchfluss ≥ 0,4 m³/h bis Railway pantographs — requirements for m + 3 more
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I2 Analytical

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UKAS 4041 Croxley Green, GB
staining based on HSG 248. (HSG 248) – 2021 (PCM) based on HSG 248 A007B based on BS EN15051-2:2013 +1:2016 DIN EN 12457-3 + 3 more
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IAMT Engineering

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DAkkS D-K-19019-01-02 Weischlitz, DE
Railway brake — magnetic track brakes (U − Gleichspannung − Spannungsverhältnis − Frequenz und Drehzahl nur Vor-Ort-Kalibrierung + 3 more
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IANESCO

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COFRAC 1-6209 Poitiers, FR
DIN EN ISO 17294-2 ISO 7086-2:2000 DIN EN ISO 14403-2 DIN EN ISO 13395 NF T 90-412 + 3 more
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IDIADA AUTOMOTIVE TECHNOLOGY

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ENAC LE159 Santa Oliva, ES
DIN EN 1385 EN 17092-1:2020 DIN EN ISO 5077 EN 1317-1 DIN EN ISO 13688 + 3 more
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IFLb Laboratoriumsmedizin Berlin GmbH MVZ IFLb - Institut für Laboratoriumsmedizin Berlin

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DAkkS D-ML-13224-01-01 Berlin, DE
HbA1c Vitamin A Vitamin B1 Vitamin B2 Vitamin B6 + 3 more
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IFTS

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COFRAC 1-0847 Foulayronnes, FR
NF X 45-301 NF X 45-302 NF X 45-303 ASTM F795-88 NF P 90-319 de 02/2011 + 3 more
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IGIENAIR LORRAINE

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COFRAC 1-6747 Atton, FR
NF EN 12469 Annexe G NF S 90-351 NF EN 12469 Annexe D NF X 15-206 DIN EN 14175-4 + 3 more
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IGIENAIR RHONE - ALPES

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COFRAC 1-6558 Bron, FR
NF EN 12469 Annexe G NF EN 12469 Annexe H NF EN 12469 Annexe D DIN EN 14175-4 NF S 90-351 + 3 more
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IGIENAIR SUD EST

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COFRAC 1-6559 Aix-En-Provence, FR
NF EN 12469 Annexe G NF S 90-351 NF EN 12469 Annexe D NF X 15-206 DIN EN 14175-4 + 3 more
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IHP Institut für Hämostaseologie und Pharmakologie MVZ

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DAkkS D-ML-20687-01-00 Berlin, DE
Thrombozytenaggregometrie Drogen- und Medikamentenscreening Freie Fettsäuren Linolensäure, Eicosapentaensäure + 3 more
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IHU Geologie und Analytik Gesellschaft für Ingenieur-, Hydro- und Umweltgeologie

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DAkkS D-PL-17729-01-00 Stendal, DE
DIN EN ISO 5667-1 (A 4) DIN 38402-A 11 DIN 38402-A 12 DIN 38402-A 13 DIN ISO 5667-5 (A 14) + 3 more
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IMA Materialforschung und Anwendungstechnik

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ASTM F1978 ASTM G195 DIN EN ISO 4287 DIN EN ISO 4288 DIN EN ISO 5470-1 + 3 more
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IMD Institut für Medizinische Diagnostik Berlin-Potsdam GbR IMD Berlin MVZ

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DAkkS D-ML-13142-01-01 Berlin, DE
Fettsäureprofil der Erythrozytenmembran Kurzkettige Fettsäuren MMA (Methylmethacrylat) Gesamtporphyrine + 3 more
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IMD Institut für Medizinische Diagnostik Berlin-Potsdam GbR IMD Potsdam MVZ

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Hämoglobin A1c (HbA1c) Differenzialblutbild Erythrozyten Erythroblasten (NRBC) Hämatokrit + 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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