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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DAkkS D-PL-18795-02-00 Hannover, DE
- Qualität Plasmazellen Genotyp zur Spurenuntersuchung Genotyp zur Identitätsfeststellung Speichel daktyloskopische Spuren + 3 more
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DAkkS D-PL-13101-01-00 Dresden, DE
Alpha-Amylase Gesamt-Eiweiß THC Norcocain Urine | Morphine/codeine/ heroin + 3 more
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DAkkS D-PL-18916-01-00 Magdeburg, DE
Aminosäuren Genotyp zur Spurenuntersuchung daktyloskopische Spuren humanes Hämoglobin Sperma + 3 more
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DAkkS D-PL-18827-01-00 Erfurt, DE
Urin Aminosäuren Kokain Okkultes Blut Urine | Morphine/codeine/ heroin + 3 more
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DAkkS D-PL-18424-02-03 Berlin, DE
DIN ISO 16000-3 DIN ISO 16000-6 DIN EN ISO 10523 (C 5) DIN EN 27888 (C 8) DIN EN ISO 10304-1 (D 20) + 3 more
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DAkkS D-PL-18547-02-03 Neumünster, DE
DIN EN 27888 DIN EN ISO 105-A03 DIN EN ISO 11885 DIN EN ISO 10523 (C 5) DIN EN 27888 (C 8) + 3 more
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DAkkS D-PL-18465-02-00 Saarbrücken, DE
daktyloskopische Spur latente Eindruckspuren
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DAkkS D-PL-18515-02-02 Dresden, DE
Dermatophyten Corynebakterien Giardia Chlamydien IgA Antikörper gegen + 3 more
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DAkkS D-PL-14609-01-01 Speyer, DE
DIN EN ISO 6579-1 DIN EN ISO 21528-1 DIN EN 12879 DIN EN 12880 DIN 19682-2 + 3 more
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DAkkS D-PL-14165-01-00 Oldenburg, DE
DIN EN 15111 DIN EN 15763 DIN EN ISO 6887-2 DIN EN ISO 6887-3 DIN EN ISO 6887-4 + 3 more
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ACCREDIA 00138 Oristano, IT
DIN EN ISO 11290-1 ISO 16649-2 ISO 11290-1 ISO 6579-1 ISO 4833-1 + 3 more
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ACCREDIA 01487 Lecco, IT
DIN EN ISO 16266-2 ISO 16266-2 ISO 6222 ISO 7899-2 ISO 9308-1 + 3 more
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Leadec BV &

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DAkkS D-K-21171-01-01 Chemnitz, DE
- Gleichstromwiderstand - Wechselspannung / Messgeräte 330 V Wechselstrom 33 mA + 3 more
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UKAS 9862 Leeds, GB
Calcium Kappa Lambda EBV MPO + 3 more
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UKAS 9305 St. James' University Hospital, GB
Kappa Lambda EBV MPO HLA-DR + 3 more
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UKAS 4707 Port Talbot, GB
(HSG 248) – 2021 (PCM) based on HSG 248 LSOP6 based on HSG 248
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DAkkS D-K-21443-01-00 Schmalkalden, DE
1) In den CMC sind die erweiterten Messu Lehrdorne Durchmesser 1 mm Lehrringe zylindrische Außen- und + 3 more
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DAkkS D-K-14544-01-00 Rostock-Warnemünde, DE
Railway braking — urban guided transport - Direktanzeigende Thermometer Taupunkttemperatur Abgasmessgeräte für Widerstandssensor *) + 3 more
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DAkkS D-PL-11240-01-01 Bremen, DE
Toxizität UGT1A1-Gen rs3064744, rs414832 P1433, P14-3-3 Myopathie, Nemaline (TyP1, 3-10: DIN EN 13261 ASTM D 3242 + 3 more
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RvA L198 Leiden, NL
en 2007
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LUMC

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RvA M007 Leiden, NL
BS SOP004 using sandwich immunoassay Elektroforese/Iso-electrofocussing Fragment Lengte variant onderzoek Chromosomale varianten onderzoek Copy Number Variant (CNV) onderzoek + 3 more
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Leonardo SPA

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ACCREDIA 02374 Roma, IT
IEC 15408-1 IEC 18045 IEC 18367 IEC 20543 IEC 20004
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Leybold

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DAkkS D-K-15162-01-00 Köln, DE
30 HV 0,03 Kalibrieren von 111 2,5·10 Vakuumtechnik 1·10 -8 Vakuummetern + 3 more
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DAkkS D-PL-22767-01-00 Leverkusen, DE
Genotyp zur Spurenuntersuchung Genotyp zur Identitätsfeststellung Humane DNA Speichel (α-Amylase) Blutspuren + 1 more
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ACCREDIA 01595 Enna, IT
DIN EN 27888 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 11885 DIN EN ISO 15587-2 + 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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