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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HELIOS Horst Schmidt Kliniken Wiesbaden GmbH Institut für Labordiagnostik und Hygiene

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Verschlusszeit (ADP, Epinephrin, P2Y12) HCG, ß-HCG PF4/Heparin-Komplexe induzierte Thrombozytopenie, Test) Differenzialblutbild (maschinell) + 3 more
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Natriumchlorid Glucose Kalium Natrium Albumin + 3 more
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DAkkS D-PL-18661-01-00 Leipzig, DE
DIN EN ISO 10666 DIN 53438-3 rs738409 DIN EN 1382 DIN EN 1383 + 3 more
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UKAS 4026 Meopham, GB
(HSG 248) – 2021 (PCM) based on HSG 248 (HSG 264, 2012)
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HIGHVOLT Prüftechnik Dresden GmbH Kalibrierlaboratorium

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DAkkS D-K-19153-01-01 Dresden, DE
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DAkkS D-PL-21561-01-00 Brühl, DE
IEC 61000-4-2: 2008 VDE 0847-4-2 IEC 61000-4-4: 2012 VDE 0847-4-4 IEC 61000-4-5: 2005 + 3 more
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HLK Stuttgart

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DIN EN 442-2 DIN EN 16430-1 DIN EN 16430-2 DIN EN 16430-3 DIN 4703-3 + 3 more
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HOP'LAB

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COFRAC 1-6221 Strasbourg, FR
NF X43-050 (parties utiles de NF X 43-050 NF X43-050 (parties utiles de la
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HORIBA MIRA

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UKAS 1105 Nuneaton, GB
IEC/CISPR 25 DIN EN 55025: 2018 ISO 7637-2 ISO 11451-1 IEC/CISPR 12 + 3 more
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UKAS 0642 Ross-on-Wye, GB
(HSG 248) – 2021 M003 based on HSG 248 (PCM) based on HSG 248 M002based on HSG 248 HSG 227 (2004)) + 2 more
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HaBu Hauck Prüftechnik

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DAkkS D-K-17344-01-01 Hochdorf-Assenheim, DE
Härte *) 20 HRA Härtevergleichsplatten 20 HRB nach Rockwell Verfahren 20 HRC 40 HRD 60 HRF + 3 more
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Hampshire Scientific Service

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UKAS 0024 Southsea, GB
(HSG 248) - 2021 ASB/SOP/OM8 based on HSG 248 ASB/SOP/OM6 based on HSG 248 DIN EN 12697-11 on BS 4401:Part 3:1970(1986) + 3 more
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Hartford Steam Boiler UK

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UKAS 8452 Manchester, GB
BS 2790 - Specification for the design a BS 1113 - Specification for the design a BS EN 13480 Parts 1 to 8 - Metallic EN 13445 – Parts 1 to 10 Unfired pressur BS EN ISO 15614 and ASME IX + 3 more
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Harzklinikum Dorothea Christiane Erxleben GmbH Zentrum für Laboratoriumsdiagnostik

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DAkkS D-ML-13446-01-01 Wernigerode, DE
automatische Zelldifferenzierung Erythrozyten Leukozyten Retikulozyten Thrombozyten + 3 more
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Healthy Buildings (Ireland) Ltd

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UKAS 4659 Newry, GB
(HSG 264, 2012) and Appx. 3 of HSG 227 (2004)) Executive guides HSG 264 (2012)
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Hensel Mess-, Regel- und Prüftechnik

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DAkkS D-K-15122-01-00 Cunewalde, DE
Absolutdruck p abs > 41 bar Negativer und positiver Überdruck + 3 more
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Hessische Eichdirektion

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Masse * 1 mg konventioneller 2 mg Wägewert/ Masse > 5 mg 10 mg + 3 more
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Heywood Williams Components

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UKAS 9868 Daventry, GB
DIN EN 1026 DIN EN 12046-2 BS 6375-1:2015 + A1:2016 and the DIN EN 1027 DIN EN 1629 + 3 more
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Hohenstein Laboratories

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DAkkS D-PL-12083-01-04 Bönnigheim, DE
DIN 53160 DIN 54034 DIN 54056 DIN EN 20105-A02 DIN EN 20105-N01 + 3 more
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Home Counties Asbestos

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UKAS 24561 Hertford, GB
(HSG 264, 2012)
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Hoppesack Mess- und Regeltechnik Vertriebs

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DAkkS D-K-15198-01-00 Hanau, DE
Taupunkttemperatur thermometer, -80 °C bis Railway braking — urban guided transport > -35 °C bis Temperatur- −35 °C bis + 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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