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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Laborarztpraxis Rhein-Main MVZ GmbH & Co. e

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Laboratoire de Microbiologie RD&E

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COFRAC 1-6419 Sainghin-En-Melantois, FR
DIN EN 17126 DIN EN 14562 DIN EN 14348 IEC 60127-5 DIN EN 14563 + 3 more
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Laboratoire de l'Environnement et de l'Alimentation de la Vendée (LEAV)

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COFRAC 1-1064 La Roche-Sur-Yon Cedex 9, FR
DIN ISO 11665-4 DIN 53483-2 DIN EN ISO 7937 NF V08-050 NF V 08-060 + 3 more
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Laborgemeinschaft Berlin - Labor 28

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DAkkS D-ML-17159-01-00 Berlin, DE
Basophile Granulozyten Eosinophile Granulozyten Erythrozyten Hämatokrit Leukozyten + 3 more
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DAkkS D-ML-18033-01-00 Köln, DE
Liste aller Untersuchungsverfahren im fl Webpräsenz des Medizinischen Laboratoriu HbA1c Basophile Basophile absolut + 3 more
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Laborgemeinschaft Odenwald

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DAkkS D-ML-18493-01-00 Darmstadt, DE
HbA1c Großes Blutbild Kleines Blutbild Retikulocyten Natriumchlorid + 3 more
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Laborärzte Sindelfingen

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DAkkS D-ML-13247-01-01 Sindelfingen, DE
Ristocetin Kofactor Aktivität Willibrand Faktors a-Hydroxy-Alprazolam Amilsulprid 7-amino-Flunitrazepam + 3 more
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Lambda Calibration

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UKAS 0495 Chorley, GB
PRESSURE (cont’d) Distortion Factor Spot frequency Phase angle (Herpes simplex virus type + 3 more
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Lambeth Scientific Services

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UKAS 0937 Chessington, GB
(HSG 248) – 2021 (PCM) based on HSG 248 P-12 based on HSG 248
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Lancashire County Scientific Services

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UKAS 0625 Preston Riversway Docklands, GB
(HSG 248) – 2021 (PCM) based on HSG 248 ISO 12966-2 F06 6 & F06 5 based on BS EN F05 4 based on BS 770:Part + 3 more
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Landesuntersuchungsanstalt für das Gesundheits- und Veterinärwesen Sachsen

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GPT GOT GGT Salmonellen Shigellen + 3 more
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Leadec BV &

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DAkkS D-K-21171-01-01 Chemnitz, DE
Gleichspannung 33 mV Messgeräte 0,33 V 330 V Gleichstromstärke 33 µA Messgeräte 0,33 mA + 3 more
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Leftfield Environmental

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UKAS 6998 Port Talbot, GB
(HSG 264, 2012)
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Leftfield Environmental

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UKAS 4707 Port Talbot, GB
(HSG 248) – 2021 LSOP6 based on HSG 248 (PCM) based on HSG 248
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Lehren- und Meßgerätewerk Schmalkalden GmbH LMW-Kalibrierservice

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DAkkS D-K-21443-01-00 Schmalkalden, DE
(ein- und mehrgängige zylindrische Außen- und symmetrischem und unsymmetrischem Profil) Außengewinde + 3 more
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Leibniz-Institut für Ostseeforschung Warnemünde (IOW) Analytik-Gruppe (Kalibrierlabor) des IOW

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DAkkS D-K-14544-01-00 Rostock-Warnemünde, DE
Taupunkttemperatur - Direktanzeigende Thermometer (SPRT) *) thermometer *) −2 °C bis Transmitter und + 3 more
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Leibniz-Institut für Werkstofforientierte Technologien - IWT Amtliche Materialprüfungsanstalt der Freien Hansestadt Bremen

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DAkkS D-PL-11240-01-01 Bremen, DE
DIN EN 60601-2-4 IEC 60512-4-1 DIN EN 124-2 IEC 60512-4-3 DIN EN 60601-2-44 + 3 more
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Life Environmental Services

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UKAS 0610 Bishop's Stortford, GB
(HSG 248) – 2021 QSOP 01 based on HSG 248 (PCM) based on HSG 248 QSOP 03 based on HSG 248
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Life Environmental Services

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UKAS 0340 Bishop's Stortford, GB
(HSG 264, 2012) Appendix 5 of HSG 227 (2004)
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Limbach Nord GmbH MVZ Labor Limbach Lehrte

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DAkkS D-ML-21457-02-00 Lehrte, DE
Aluminium Blei Eisen, Kupfer Ampicillin Cefepim + 3 more
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Linde GmbH Linde Gas Deutschland

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DAkkS D-K-21622-01-00 Unterschleißheim, DE
anteile Kohlenstoffmonoxid Kohlenstoffdioxid Methan Ethan + 3 more
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Linsch Consultants

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UKAS 2432 Newport, GB
(HSG 248) – 2021 staining based on HSG 248
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Liverpool University Hospitals NHS Foundation Trust

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UKAS 9656 70 Pembroke Place, GB
accordance with (EN ISO 14644- BS EN ISO 14644-1:2015
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Logical Compliance

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UKAS 29622 Chelmsford, GB
(HSG 264, 2012)
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London Borough of Enfield

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UKAS 1119 Enfield, GB
staining based on HSG 248 (HSG 248) – 2021 (PCM) based on HSG 248
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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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