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
๐Ÿ‡ง๐Ÿ‡ช NBN EN 14531-1 ๐Ÿ‡ฉ๐Ÿ‡ช DIN EN 14531-1 ๐Ÿ‡ฌ๐Ÿ‡ง BS EN 14531-1 ๐Ÿ‡ซ๐Ÿ‡ท NF EN 14531-1 ๐Ÿ‡ฎ๐Ÿ‡น UNI EN 14531-1 ๐Ÿ‡ช๐Ÿ‡ธ UNE EN 14531-1 ๐Ÿ‡ณ๐Ÿ‡ฑ NEN EN 14531-1
3,525 Accredited labs
21 Countries

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UKAS 9988 Eastbourne, GB
EDTA Whole Blood Blood Grouping: | SOP 1 Kings Drive | +44 (0) 300 131 4497 EDTA Whole Blood Full blood counts and a MCH | HAJ-184 EDTA Whole Blood Erythrocyte Sedimentati + 3 more
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UKAS 9055 Eastbourne, GB
Paediatric Audiology | Otoscopy Paediatric Audiology | History taking Paediatric Audiology | Tympanometry Paediatric Audiology | Performance Test Paediatric Audiology | Play Audiometry + 3 more
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UKAS 10169 Jordanstown, GB
EN ISO 1716 EN ISO 11925-2 BS 1363-1 DIN 10964 DIN EN 13964 + 3 more
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UKAS 4225 Deeside, GB
dbSNP rs1800562, rs1799945, rs1800730, r DIN EN 1948-4 (HSG 248) โ€“ 2021 (PCM) based on HSG 248 based on BS EN 12457
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UKAS 0621 Wednesbury, GB
ISO 3795 DIN EN 60068-2-14 DIN EN 60068-2-30 DIN EN 60068-2-78 IEC 60068-2-2 + 3 more
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UKAS 22808 Derby, GB
Railway braking โ€” wheel slide protection
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UKAS 2604 Wentloog, GB
(HSG 264, 2012) Executive guides HSG 264 (2012) and Appx. 3 of HSG 227 (2004)) (HSG 248) โ€“ 2021 in Appendix 5 of HSG 227 (2004) + 3 more
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UKAS 0441 Glasgow, GB
(HSG 264, 2012) Asbestos: The Analysts' Guide (HSG 248) Surveying for asbestos in premises HSG 264 (2012) and Appx. 3 of
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UKAS 1755 Redditch, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 SOP/11, based on HSG 248
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UKAS 1227 Fareham, GB
DIN EN 12457-2 (HSG 248) โ€“ 2021 (PCM) based on HSG 248 staining based on HSG 248. 3.02 based on HSG 248
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Envirolab

Active
UKAS 1247 Hattersley, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248
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UKAS 2719 Cannel Row, GB
Appendix 5 of HSG 227 (2004) (HSG 248) โ€“ 2021 (HSG 264, 2010) (PCM) based on HSG 248 TP003 based on HSG 248 + 1 more
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UKAS 2099 Exeter, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 SP1 based on HSG 248
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UKAS 9608 Basildon, GB
(HSG 264, 2012) Executive guides HSG 264 (2012) and Appx. 3 of HSG 227 (2004))
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Environtec

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UKAS 2030 Chelmsford, GB
(HSG 248) โ€“ 2021 staining based on HSG 248 (PCM) based on HSG 248
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UKAS 28785 Wolverhampton, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 SOP 3 based on HSG 248
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UKAS 8353 Buckinghamshire, GB
Epilepsy Society Serum and plasma Brivaracetam | TDM-TST- Carbamazepine + carbamazepine-epoxide (m Clobazam + Desmethylclobazam (metabolite Clonazepam + 3 more
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UKAS 8007 Corringham, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 TP03 based on HSG 248
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UKAS 2734 Darlington, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 TP005, based on HSG 248
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UKAS 0076 Northampton, GB
DIN EN 597-1 DIN EN 597-2 DIN EN 1021-1 DIN EN 1021-2 BS 5852 + 3 more
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UKAS 2183 Newmarket, GB
DIN EN 12457-2 DIN EN 12457-3 (HSG 248) โ€“ 2021 (PCM) based on HSG 248 staining based on HSG 248.
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UKAS 9256 Guildford, GB
HbA1c Cortisol Glucose CA 125 CEA + 3 more
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UKAS 27424 Guildford, GB
Whole blood Non-Invasive Prenatal Testin Aneuploidies in Chromosome 13, | Prenata Non-Invasive Prenatal Testing for Aneupl 18, 21, X and Y and Foetal sexing | Illu 18, 21, X and Y and Foetal sexing | CLIN + 3 more
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UKAS 0452 Bideford, GB
Flicker Total Harmonic Distortion HF-Transmission Phase CFH-Gen, Macula-Degeneration IEC 61000-4-2: 2008 + 3 more
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UKAS 1574 York, 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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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 โ€” Braking performance
  • UIC 541-01 Railway brakes โ€” Brake pads โ€” Part 1: Friction material specification
  • EN 14531-1 Railway applications โ€” Safety requirements for the design of rolling stock

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