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
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COFRAC 1-6177 Sainte-Adresse, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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DAkkS D-PL-18658-01-01 Lünen, DE
DIN 18041 DIN EN 1804-2 DIN EN 1804-3 DIN EN 1804-1 DIN EN 1804-2 + 1 more
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UKAS 9059 London, GB
Digoxin Cortisol Glucose AMH Phenytoin + 3 more
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UKAS 30692 Runcorn, GB
Audiology Paediatric Hearing Services | History taking | Welch Allyn GSI 39 auto Tympanometry | Titan Play Audiometry | Kamplex KKS5 (interaco Performance Testing | (interacoustics) + 1 more
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HELFY

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COFRAC 1-5946 Cuincy, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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DAkkS D-ML-13015-01-01 Wiesbaden, DE
Ethanol Digitoxin Digoxin Cortisol Testosteron + 3 more
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Ethanol Digitoxin Digoxin Aldosteron Cortisol + 3 more
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DAkkS D-ML-13211-01-00 Wuppertal, DE
Digitoxin Digoxin HbA1c Aldosteron Cortisol + 3 more
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DAkkS D-PL-12165-01-01 Oberkochen, DE
DIN EN 10228-2 DIN EN IEC 60068-2-5 DIN EN IEC 60068-2-11 DIN EN 60068-2-14 DIN EN 60068-2-18 + 3 more
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DAkkS D-K-20425-01-00 Ulm, DE
- Gleichspannung - Gleichstromwiderstand - Wechselspannung - Wechselstromstärke - Kapazität + 3 more
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ACCREDIA 01412 Castelfranco di Sotto, IT
DIN EN 13657 DIN EN ISO 10523 DIN EN 14346 DIN EN 15934 DIN EN 12457-2 + 3 more
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ACCREDIA 00101 Sasso Marconi, IT
DIN EN ISO 15587-2 DIN EN ISO 17294-2 DIN EN ISO 9377-2 DIN EN ISO 9698 ISO 11731 + 3 more
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ACCREDIA 00157 Monselice, IT
ISO 4832 ISO 21527-1 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 + 3 more
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DAkkS D-ML-21826-01-00 Bad Bocklet, DE
Creatinin HbA1c Cortisol Glucose Hämoglobin + 3 more
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DAkkS D-PL-18661-01-00 Leipzig, DE
Toxizität UGT1A1-Gen rs3064744, rs414832 rs738409 Myopathie, Nemaline (TyP1, 3-10: DIN 53438-3 VDE 0432- 1 + 3 more
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UKAS 4026 Meopham, GB
(HSG 264, 2012) (HSG 248) – 2021 (PCM) based on HSG 248
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DAkkS D-K-19153-01-01 Dresden, DE
Railway brake — magnetic track brakes (U - Kapazität / Messgeräte Zeitparameter 60 µs Zeitparameter T c 0,5 µs + 3 more
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DAkkS D-PL-21561-01-01 Brühl, DE
DIN EN 50155 VDE 0115-200 VDE 0468-2-1 DIN EN 60068-2-14 VDE 0468-2-14 + 3 more
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ACCREDIA 00046 Napoli, IT
ERA_ERTMS_040063 v.1.2.0 ed. 2013 ERA_ERTMS_040063 v.3.0.0 ed. 2017 ERA_ERTMS_040092 v.1.0.0 ed. 2017 ERA_ERTMS_040092 v.1.1.0 ed. 2017 UNISIG SUBSET-076-5-2 v.2.3.3 ed. 2009 + 3 more
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HLK Stuttgart

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DAkkS D-PL-11026-01-01 Stuttgart, DE
Sound power — engineering methods for sm Sound intensity — scanning method (ISO 9 (-13910T>C) rs4988235 - PiM rs6647, PiZ rs28929474, rs17580 Laktoseintoleranz (LCT -14055 + 3 more
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HORIBA MIRA

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UKAS 1105 Nuneaton, 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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ENAC LE2732 Girona, ES
en 20
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ENAC LC10.220 San Sebastián de los Reyes, ES
ISO 16063-21 UNE-EN 61672-3 UNE-EN 60651 UNE-EN 60804 UNE-EN IEC 60942 + 3 more
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ACCREDIA 01052 Roma, IT
Hand-arm vibration — measurement (ISO 53 Hand-arm vibration — practical guidance Whole-body vibration — evaluation of hum DIN EN 27888 DIN EN ISO 19458 + 3 more
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UKAS 8359 Barnet, GB
Ethanol Digoxin HbA1c Cortisol Glucose + 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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