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
1,323 Accredited labs
15 Countries

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London Laboratories

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UKAS 9681 Hextable, GB
(HSG 248) – 2021 ASB04 based on HSG 248 (PCM) based on HSG 248
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Lucion Services

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UKAS 2569 Gateshead, GB
staining based on HSG 248 (HSG 248) – 2021 (PCM) based on HSG 248 3492, ISO14966 and HSG 248 DIN EN 14629 + 3 more
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Ludwig Schneider Messtechnik

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DAkkS D-K-15223-01-00 Wertheim, DE
Taupunkttemperatur Fixpunktzellen *) thermometer (SPRT) *) meter, direkt anzeigende thermometer und + 3 more
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Ludwig-Maximilians-Universität München Max von Pettenkofer-Institut Lehrstuhl für Medizinische Mikrobiologie und Krankenhaushygiene

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DAkkS D-ML-14413-03-01 München, DE
Cryptococcus neoformans Cardiolipin AK Escherichia coli K1-AG Haemophilus influenzae Metromec Software AG + 3 more
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M E Broadstone Limited

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UKAS 0227 Poole, GB
Plain ring gauges (taper) Plain gap gauges (parallel) Plain plug gauges (taper) LENGTH ANGLE + 3 more
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MBS

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DAkkS D-PL-12159-01-00 Krefeld, DE
DIN EN ISO 16484-5 DIN EN ISO 16484-6 IEC 62386-101 IEC 62386-102 IEC 62386-103 + 3 more
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MCV

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ENAC LC10.124 Collbató, ES
0,005 l/min ≤ Q ≤ 50 l/min 0,5 m3/h≤ Q ≤ 2,8 m3/h 0,6 m3/h  Q  2,8 m3/h 20 m3/h  Q  30 m3/h 30 m3/h < Q  70 m3/h + 3 more
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MD ELEKTRONIK GmbH MD Test Laboratory (Prüflabor)

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DAkkS D-PL-19548-01-03 Waldkraiburg, DE
DIN EN 13018 DIN EN 50289-1-2 DIN EN 50289-1-3 DIN EN 50289-1-4 DIN EN 50289-1-5 + 3 more
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MDI Limbach Berlin

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DAkkS D-ML-13341-01-01 Berlin, DE
17-OH-Carbazepin Amiodaron, Desmethylamiodaron Amitriptylin Clobazam Clomipramin + 3 more
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ME-Meßsysteme

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DAkkS D-K-21980-02-01 Hennigsdorf, DE
Kraft 50 N Sound power — survey method (ISO 3746) > 200 N Railway brake — automatic variable load 0,2 kN + 1 more
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MESA Meß- und Regeltechnik Vertriebs- und Service

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DAkkS D-K-20515-01-00 Filderstadt, DE
Temperaturmessgrößen auch direktanzeigend 35 °C direktanzeigende > 200 °C auch direktanzeigend Temperaturmessgrößen −35 °C + 3 more
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MESSRING

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DAkkS D-K-22828-01-01 Ingolstadt, DE
Kraft Gurtkraftaufnehmer Railway brake — disc brake components (U
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METER UNDER TEST

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ENAC LC10.163 Badalona, ES
Rangos de caudal (m3/h): 1 m3/h ≤ Q < 25
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METROCAL CALIBRACIÓN

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ENAC LC10.236 San Ginés, ES
1 g 2 g 5 g 10 g 20 g 50 g 100 g 200 g 5 5 kg 10 kg 20 kg 100 kg 200 kg 500 kg 1000 kg 1 g 2 g 5 g 10 g 20 g 50 g 100 g 200 g 5 + 2 more
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METROPACK

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COFRAC 1-6986 Reims, FR
ISO 11607-1 ASTM F1886 BS EN ISO 11607-1:2020+A11 NF EN 868-5 annexe D ASTM F88 DIN EN 12758 + 3 more
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MINISTERO DELLA DIFESA - DIREZIONE GENERALE DI COMMISSARIATO E DI SERVIZI GENERALI UFFICIO TECNICO TERRITORIALE DI NAPOLI

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ACCREDIA 00540 Napoli, IT
DIN EN ISO 12945-2 DIN EN ISO 5403-1 DIN EN ISO 2060 DIN EN ISO 13937-1 DIN EN ISO 11642 + 3 more
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MITSUBISHI ELECTRIC EUROPE BV

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COFRAC 1-7500 Nanterre, FR
DIN EN 14511-2 DIN EN 14511-3 DIN EN 14511-4 DIN EN 14825 NF EN 16147
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MK-Kalibrierlabor

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DAkkS D-K-18366-01-01 Schweinfurt, DE
1350 mm Innen- und Tiefenmaße * > 300 mm Tiefenmessschieber * 0 mm Höhenmessschieber * 0 mm + 3 more
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MLL MVZ

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DAkkS D-ML-13228-01-00 München, DE
Berliner-Blau-Reaktion Naphthylacetat-Esterase Pappenheim-Färbung Peroxidase-Reaktion Schnellfärbung (Diff-Quick) + 3 more
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MLM MEDICAL LABS

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DAkkS D-ML-13178-01-01 Mönchengladbach, DE
CRP Cystatin C HbA1c Großes Blutbild Kleines Blutbild + 3 more
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MP Calibration Services

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UKAS 0228 Wimborne, GB
Plain plug gauges (parallel) length bars) LENGTH (continued) Micrometers (enzephalomyopathische Form + 3 more
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MPA Eberswalde Materialprüfanstalt Brandenburg GmbH Prüflabor

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DAkkS D-PL-11241-01-01 Eberswalde, DE
DIN EN 50178: 1998 DIN EN ISO 2813 DIN EN ISO 4628-4 DIN EN ISO 10456 DIN EN ISO 12572 + 3 more
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MPA Kalibrierdienst

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DAkkS D-K-17552-01-01 Berlin, DE
Drehmoment * 0,2 N∙m > 10 N∙m bis Kalibriereinrichtungen > 100 N∙m Drehmomentschlüssel, 0,2 N∙m + 3 more
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MR COMP

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DAkkS D-PL-13383-01-00 Gelsenkirchen, DE
IEC 62570 DIN 13273-7
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MS Laboratories

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UKAS 1625 Wellingborough, GB
on BS 4401:Part 3:1970(1986) ISO 936:1998 BS ISO 21528-2:2017 BS ISO 16649-2:2001 ISO 6888-1 + 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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