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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UKAS 0610 Bishop's Stortford, GB
(HSG 248) – 2021 (PCM) based on HSG 248 QSOP 01 based on HSG 248 QSOP 03 based on HSG 248
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ACCREDIA 00645 Robassomero, IT
DIN EN ISO 19458 DIN EN 13126-19 DIN EN ISO 14780 DIN EN ISO 16994 DIN EN ISO 18125 + 3 more
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DAkkS D-PL-20185-01-04 Mannheim, DE
rs738409 DIN EN 60601-2-33 DIN EN 15763 DIN EN 27888 DIN EN ISO 6571 + 3 more
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DAkkS D-ML-21457-02-00 Lehrte, DE
tration von Harnsäure tration von Harnstoff Digitoxin Digoxin HbA1c + 3 more
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DAkkS D-K-21622-01-00 Unterschleißheim, DE
- Hochspannungsmessgrößen CMC DIN IEC ISO + 3 more
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UKAS 2432 Newport, GB
(HSG 248) – 2021 staining based on HSG 248
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UKAS 9362 Pembroke Place, GB
Plasmodium knowlesi, Wuchereria | TECH-S Babesia | . Entamoeba histolytica / dispar, | TECH-S Ascaris lumbricoides, Ancylostoma | TECH Faeces Detection and identification of | + 3 more
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UKAS 9756 Liverpool, GB
EBV-IgG Scl-70 Candida albicans HSV IgG Bence-Jones Protein + 3 more
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UKAS 7924 Liverpool, GB
Calcium Fungi Cells of T-cell lineage: peripheral Dendritic cells: cortical thymocytes: | Identification of: | Using culture media + 3 more
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UKAS 7832 Liverpool, GB
Audiology | Adult Hearing Services: Audiology | Otoscopy Audiology | History Taking Audiology | Pure Tone Audiometry Audiology | Impression Taking + 3 more
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UKAS 9656 70 Pembroke Place, GB
BS EN ISO 14644-1:2015 accordance with (EN ISO 14644-
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UKAS 8196 Liverpool, GB
Measurement Andrological examination activities for Post vasectomy: Detection of sperm Fertility testing: Volume pH Sperm concentration + 3 more
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DAkkS D-PL-20103-01-02 Iserlohn, DE
DIN EN ISO 3679 DIN EN 27888 DIN EN 12880 DIN EN ISO 11885 DIN EN ISO 10523 (C 5) + 3 more
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UKAS 29622 Chelmsford, GB
(HSG 264, 2012)
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UKAS 1119 Enfield, GB
(HSG 248) – 2021 staining based on HSG 248 (PCM) based on HSG 248
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UKAS 9681 Hextable, GB
(HSG 248) – 2021 (PCM) based on HSG 248 ASB04 based on HSG 248
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UKAS 8300 Southall, GB
Audiology | Adult Hearing Services: Audiology | Otoscopy Audiology | History Taking Audiology | Pure Tone Audiometry Audiology | Impression Taking + 3 more
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UKAS 9148 London, GB
LDH antigens of Plasmodium spp: P. falci DNA P. vivax P. malariae P. ovale + 3 more
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Lorica

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ACCREDIA 02207 Scandicci, IT
DIN EN ISO 10304-1 ISO 10304-1 ISO 11465 ISO 54321 NF EN ISO 11885 + 3 more
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ACCREDIA 00866 Lovere, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN ISO 6506-1 DIN EN ISO 6507-1 DIN EN ISO 6892-2 + 3 more
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ACCREDIA 00972 Lovere, IT
DIN EN 13260 DIN EN 13261 DIN EN 13262 DIN EN 13103-1 UNI 10478-2 + 3 more
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Lucideon

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UKAS 0013 Stone, GB
ISO DIN EN 772-1 DIN EN 594 DIN EN 1607 DIN EN 13964 + 3 more
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UKAS 2569 Gateshead, GB
DIN EN 12504-1 DIN EN 14629 DIN EN 14630 (HSG 248) – 2021 ASTM C876-22b + 3 more
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DAkkS D-K-15223-01-00 Wertheim, DE
Railway braking — urban guided transport - Direktanzeigende Thermometer Taupunkttemperatur angeschlossenem standsthermometer *) + 3 more
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DAkkS D-ML-14413-03-01 München, DE
Cardiolipin AK Cryptococcus neoformans Dermatophyten Mykobakterien Chlamydia trachomatis + 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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