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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Gerico Lab Srl

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ACCREDIA 02192 Torino, IT
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Gerinnungszentrum Rhein-Ruhr

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DAkkS D-ML-18276-01-01 Duisburg, DE
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Gesellschaft für Materialforschung und Prüfungsanstalt für das Bauwesen Leipzig mbH - MFPA Leipzig

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DAkkS D-PL-11021-01-01 Leipzig, DE
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Gesundheitszentrum Brandenburg an der Havel GmbH Institut für Laboratoriumsmedizin

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Aktivator ADP / Epinephrin Thrombozytenfunktionstest Basophile Leukozyten, absolut Basophile Leukozyten Eosinophile Leukozyten + 3 more
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Gigahertz Optik

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DAkkS D-K-15047-01-00 Türkenfeld, DE
spektrale Mikrofonempfindlichkeit Photodioden 1 µA/W Bestrahlungsstärke + 3 more
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Glasgow City Council

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UKAS 1278 Glasgow, GB
(HSG 248) – 2021 staining based on HSG 248 F2011 (BS 696:Part 2:1989) F0131 (BS 1741:10-1:1989) using F0008 (BS 696:Part 2:1989) using + 3 more
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Global Safety & Environmental

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UKAS 7751 Sawbridgeworth, GB
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Gossen Metrawatt

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- Gleichspannung Messgeräte > 0,22 V > 2,2 V > 11 V > 22 V + 3 more
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Green Shield Environmental

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UKAS 9528 Stevenage, GB
Appendix 5 of HSG 227 (2004) (HSG 264, 2012)
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Gully Howard Technical

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UKAS 2735 Portsmouth, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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Gully Howard Technical

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UKAS 0363 Portsmouth, GB
HSG 227 (2004)) (HSG 264, 2012) HSG 264 (2012) and Appx. 3 of Appendix 5 of HSG 227 (2004))
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Göttfert Werkstoff - Prüfmaschinen

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ASTM D3835-16 ASTM D6204-19a ASTM D6601-19 ISO 11443 ASTM D1238-13 + 3 more
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HAZET-WERK Hermann Zerver

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DAkkS D-K-17638-01-02 Remscheid, DE
Tensile testing of metallic materials (I Vickers hardness test (ISO 6507) Drehmoment 2 N·m Handbetätigte 20 N·m + 3 more
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HBT

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DAkkS D-PL-18658-01-01 Lünen, DE
DIN 18041 DIN EN 1804-2 DIN EN 1804-3
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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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HELIOS Klinikum Krefeld GmbH Institut für Hygiene und Labormedizin

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HELIOS Klinikum Wuppertal GmbH Institut für Medizinische Labordiagnostik

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ADP-Antagonisten TRAP-6-Aktivierung ASS-Inhibition Thrombozyten-Funktionsanalyse β-HCG + 3 more
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HENSOLDT Sensors

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DAkkS D-K-20425-01-00 Ulm, DE
- Gleichspannung Spannungsmessgeräte > 20 V > 200 V Spannungsquellen + 3 more
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HESCURO KLINIK Bad Brückenau GmbH Laborgemeinschaft Bad Brückenau

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DAkkS D-ML-21826-01-00 Bad Bocklet, DE
Natriumchlorid Glucose Kalium Natrium Albumin + 3 more
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HFB Engineering

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DIN EN ISO 10666 DIN 53438-3 rs738409 DIN EN 1382 DIN EN 1383 + 3 more
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HFS Environmental

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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
Gleichspannung a) / Messgeräte > 600 kV Messsysteme, Teiler > 5 kV + 3 more
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HIMA Paul Hildebrandt GmbH Abteilung EDS, Team TLab

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DAkkS D-PL-21561-01-01 Brühl, DE
IEC 61000-6-1 IEC 61000-6-2: 2005 VDE 0839-6-1 VDE 0839-6-2 power port EN 61000-4-29 + 3 more
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HLK Stuttgart

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DAkkS D-PL-11026-01-01 Stuttgart, DE
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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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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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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