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
🇧🇪 NBN EN 14531-1 🇩🇪 DIN EN 14531-1 🇬🇧 BS EN 14531-1 🇫🇷 NF EN 14531-1 🇮🇹 UNI EN 14531-1 🇪🇸 UNE EN 14531-1 🇳🇱 NEN EN 14531-1
3,963 Accredited labs
21 Countries

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Kiwa

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UKAS 0692 Cheltenham, GB
Faktor XII-Gen rs1801020 DIN EN 15502-1 DIN EN 15502-2-1 DIN EN 15502-2-2 DIN EN 1186-13 + 3 more
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Kiwa

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UKAS 2360 Brentwood, GB
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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RvA L015 Rijswijk Zh, NL
100 HV 125 Faktor XII-Gen rs1801020 (Type 2, 5bp-Insertion)), MYD88 -22018G/A, rs182549 Laktoseintoleranz (LCT -14055 + 3 more
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Kiwa Primara

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DAkkS D-PL-12089-01-01 Kaufbeuren, DE
ISO 6722-2 ISO 20653 DIN EN ISO 6270-2 DIN EN 50155 VDE 0115-200 + 3 more
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DAkkS D-K-15224-01-00 Fulda, DE
Railway braking — urban guided transport Railway vehicle body structural requirem - Thermopaare, Thermoelemente Taupunkttemperatur thermoelemente *) + 3 more
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Klingelnberg

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DAkkS D-K-21339-01-00 Hückeswagen, DE
systeme ohne Antastung Verzahnungsmessgrößen Teilkreisdurchmess Flankenliniennormale Schrägungswinkel: β Schrägungswinkel d Teilkreisdurchmesser + 3 more
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DAkkS D-ML-19856-01-00 Ingolstadt, DE
Ethanol tration von Harnsäure tration von Harnstoff pH - Wert Schwefeldioxid SO 2 + 3 more
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DAkkS D-ML-13265-01-00 Nürnberg, DE
Aceton Ethanol F x: 2 kN Creatinin Digitoxin + 3 more
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DAkkS D-ML-13321-01-01 Wolfsburg, DE
Digitoxin Digoxin Cortisol Testosteron Glucose + 3 more
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DAkkS D-ML-13355-03-00 Stuttgart, DE
Digitoxin Digoxin HbA1c Aldosteron Cortisol + 3 more
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DAkkS D-ML-13295-04-00 München, DE
tration von Harnsäure tration von Harnstoff Digitoxin Digoxin HbA1c + 3 more
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DAkkS D-ML-13295-02-00 München, DE
PTPN11 erworbener Chromosomensatz Peroxidase-Reaktion Knochenmark Differenzierung Knochenmark + 3 more
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DAkkS D-ML-13295-08-01 München, DE
angeborener Chromosomensatz (partiell) a Die Proben werden vom Labor ohne vorhe
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DAkkS D-PL-13295-01-00 München, DE
tration von Harnsäure tration von Harnstoff Digitoxin Digoxin HbA1c + 3 more
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DAkkS D-ML-13295-04-01 München, DE
Digitoxin Digoxin HbA1c Cortisol Testosteron + 3 more
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DAkkS D-PL-13295-01-01 München, DE
tration von Harnsäure tration von Harnstoff Digitoxin Digoxin HbA1c + 3 more
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DAkkS D-ML-13295-01-01 München, DE
C-reaktives Protein (CRP) Urinstatus Cryptococcus neoformans SARS-CoV-2 Zika-Virus-RNA + 3 more
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DAkkS D-ML-13295-03-00 München, DE
Aldosteron Cortisol Testosteron Androstendion C-Peptid + 3 more
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DAkkS D-ML-13421-01-00 Ludwigshafen, DE
Digitoxin Digoxin Cortisol Glucose Hämoglobin + 3 more
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DAkkS D-ML-21361-01-00 München, DE
Veränderungen bei kompletter komplette Genanalyse Familiärer Brust- und Eierstockkrebs (Tr Eierstockkrebs (TruRisk-PANEL: ATM, BRCA a Die Proben werden vom Labor ohne vorhe + 3 more
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DAkkS D-ML-13136-01-01 Augsburg, DE
Familiärer Brust- und Eierstockkrebs Multiple endokrine Neoplasie Typ Whole Exome Sequencing (WES) Darmkrebs, adenomatöse Polyposis DICER1-assozierte Tumordisposition + 3 more
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DAkkS D-ML-13400-01-00 Groß Grönau, DE
metrischem Profil) Rötelnvirus-IgG, IgM HLA-B27 Anti-Toxoplasma-gondii Transglutaminase IgA, IgG + 3 more
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DAkkS D-K-17518-01-01 Remscheid, DE
abweichungen Metrosoft CM und Messvolumen Metrosoft QUARTIS, mit einer Software der Fa. WENZEL Raumdiagonale Metromec Chur, CH von ≤ 4666 mm
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DAkkS D-K-15098-01-01 Leonberg, DE
verwendete Abkürzungen: Koordinatenmessgeräte geräte mit einem Messprojektoren einer Raumdiagonalen Messmikroskope ≤ 600 mm taktiler Antastung einem Messvolumen mit + 3 more
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DAkkS D-K-22118-01-00 Ketsch, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO elektronische Waagen − Waagen nichtselbsttätige
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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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