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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COFRAC 1-7125 Guyancourt, FR
DIN EN 27888 DIN EN ISO 10523 DIN EN ISO 21877 DIN EN 14791 DIN ISO 16000-4 + 3 more
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ACCREDIA 00266 Lainate, IT
DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 7932 DIN EN ISO 11290-1 DIN EN ISO 21528-2 + 3 more
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SOCOTEC UK

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UKAS 1015 Burton-upon-Trent, GB
ISO 11948-1 DIN EN 13126-19 DIN EN 13284-1 DIN EN 14790 DIN EN 14792 + 3 more
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COFRAC 1-10145 Valence, FR
FD X15-140 FD X 15-140
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SOL SPA

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ACCREDIA 01045 Monza, IT
ISO 12963 EU PHARMA 01/2008 EU PHARMA 07/2022 EU PHARMA 01/2010
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ACCREDIA 00547 Alba, IT
DIN EN ISO 12966-2 ISO 18787 ISO 4832 DIN EN ISO 7932 DIN EN ISO 16050 + 3 more
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ACCREDIA 00985 Codrongianos, IT
ISO 4832 ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 DIN EN ISO 4833-1 + 3 more
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DAkkS D-K-15183-01-02 Dresden, DE
Traversen-geschwindigkeit - Gleichspannung - Wechselspannung - Kapazität Quellen + 3 more
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DAkkS D-PL-17453-01-00 Langen, DE
ISO 3795 DIN EN ISO 6506-1 DIN EN ISO 6507-1 DIN EN ISO 6508-1 DIN EN ISO 2178 + 3 more
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SPIT

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COFRAC 1-0239 Bourg-Les-Valence Cedex, FR
EAD 330232-02-601 (table A.1) : Cheville à scellement chimique EAD 330196-01-0604 : EAD 330747-00-0601 et TR048 : EAD 330087-01-0601 (reprise de fer à + 3 more
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DAkkS D-K-20497-01-01 Twist, DE
- Gleichspannung - Gleichstromstärke - Gleichstromwiderstand Quellen > 0,1 µA + 3 more
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DAkkS D-K-17475-01-00 Hilden, DE
Sound intensity — scanning method (ISO 9 Vibration measuring instruments — test m Vibration measurements near traffic — me Acoustics — tonality assessment (DIN 456 Noise measurement on railway vehicles — + 3 more
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ACCREDIA 00073 Murano, IT
DIN EN 13126-19 DIN EN ISO 16911-1 DIN EN 13284-1 DIN EN 14790 DIN EN ISO 10993-5 + 3 more
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STERIS

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ACCREDIA 02209 Seriate, IT
DIN EN ISO 17141 ISO 11737-3 BS EN ISO 11737-1:2018 ISO 11737-2 ISO 11138-1 + 3 more
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BELAC 576-TEST Lier, BE
NBN EN 13508-2 (Codering) NBN B-34-001 BEFDSS-DP-vm (Uitwisselingsformaat) MN86/13 - rev.1 OCW SB 250 Hoofdstuk 7 - Hoofdstuk 14 + 1 more
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ACCREDIA 01450 Rivarolo Canavese, IT
DIN EN ISO 19458 DIN EN 13126-19 DIN EN ISO 11885 DIN EN 13657 DIN EN 14346 + 3 more
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ACCREDIA 00697 Villorba, IT
DIN EN ISO 1133-1 DIN EN ISO 1183-1 DIN EN 14592 ISO 1183-1 DIN EN ISO 16911-1 + 3 more
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ACCREDIA 01157 Pisticci, IT
DIN EN ISO 11885 DIN EN 15408 DIN EN 13657 DIN EN ISO 10304-1 DIN EN 14039 + 3 more
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STUDIO DELTA

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ACCREDIA 00426 Norbello, IT
ISO 4832 ISO 15214 ISO 21527-1 ISO 21527-2 DIN EN ISO 4833-1 + 3 more
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STUDIO F2 SRL

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ACCREDIA 00638 Castellucchio, IT
ISO 18787 ISO 4832 ISO 15214 ISO 21527-1 ISO 21527-2 + 3 more
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ACCREDIA 00766 Cariati, IT
ISO 4832 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 6888-1 + 3 more
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ACCREDIA 01295 Ferrara, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN 10160 DIN EN ISO 13588 DIN EN ISO 17637 + 3 more
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UKAS 31282 Wakefield, GB
WSS-018 based upon BS ISO BS ISO 5667-10:2020
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DAkkS D-ML-20424-01-00 Accra, DE
HbA1c Estradiol (E2) CA 125 CEA Albumin + 3 more
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DAkkS D-ML-13225-01-01 Augsburg, DE
Digitoxin Digoxin HbA1c Cortisol Estradiol (E2) + 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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