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 1-1970 Chateauneuf Sur Isere, FR
DIN EN 12046-1 DIN EN 12046-2 DIN EN ISO 10140-2 DIN EN ISO 10140-4 DIN EN 1026 + 3 more
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ACCREDIA 00739 Bitonto, IT
APAT CNR IRSA 2030 Man 29 2003 APAT CNR IRSA 2060 Man 29 2003 APAT CNR IRSA 4030 C Man 29 2003 APAT CNR IRSA 4090 A1 Man 29 2003 APAT CNR IRSA 3150 C Man 29 2003 + 3 more
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ACCREDIA 00859 Siracusa, IT
ISO 4832 ISO 21527-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 7932 + 3 more
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ACCREDIA 00699 Faenza, IT
EPPO PM 7/79 rev 2 2016/Cor 2017 EPPO PM 7/24 rev 5 2023 Appendix 5
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ACCREDIA 00825 Sperone, IT
ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 DIN EN 846-7 ISO 16649-2 + 3 more
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ACCREDIA 00660 Ragusa, IT
ISO 4832 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 6888-2 ISO 11731 + 3 more
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ACCREDIA 01565 Corciano, IT
Circ Min Trasp n 18911 02/08/2018
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ACCREDIA 00074 Lucca, IT
DIN EN 62471: 2009 DIN EN 303-5 DIN EN 1186-3 DIN EN ISO 105-1302 ISO 5636-5 + 3 more
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ACCREDIA 00679 Camerino, IT
APAT CNR IRSA 2030 Man 29 2003 APAT CNR IRSA 2060 Man 29 2003 DM 10/02/2015 GU n 50 02/03/2015
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ACCREDIA 01014 Sciacca, IT
ISO 18787 DIN EN ISO 4833-1 ISO 11731 DIN EN ISO 4833-2 DIN EN ISO 6888-1 + 3 more
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ACCREDIA 00656 Tricase, IT
DIN EN ISO 4833-1 DIN EN ISO 6888-2 ISO 11731 DIN EN ISO 4833-2 ISO 21528-2 + 3 more
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ACCREDIA 00041 Como, IT
DIN EN 1021-1 DIN EN 1021-2 DIN EN 20105 DIN EN ISO 659 DIN EN ISO 6941 + 3 more
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ACCREDIA 01096 Pisticci, IT
DIN EN 13657 DIN EN 14346 DIN EN ISO 10304-1 DIN EN ISO 9377-2 BS EN 15662 + 3 more
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DAkkS D-PL-18721-01-01 Plochingen, DE
DIN EN 1367-5 DIN 51423-2 DIN EN ISO 10523 DIN 53843-2 DIN 53843-1 + 3 more
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ACCREDIA 01602 Camisano Vicentino, IT
IQ-Check Salmonella - AFNOR BRD 07/06-07 Reg CE 152/2009 27/01/2009 GU CE
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ACCREDIA 02292 Faenza, IT
DIN EN ISO 14891 DIN EN ISO 16826 DIN EN 1348 DIN EN 12004-2 DIN EN ISO 29466 + 3 more
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UKAS 0822 Southam, GB
Hydraulic pressure (gauge) TEMPERATURE AC CURRENT Calibration of pressure Gas pressure (gauge) + 3 more
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ACCREDIA 00051 Resana, IT
DIN EN ISO 3093 ISO 4831 ISO 4832 ISO 15214 ISO 21527-2 + 3 more
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ACCREDIA 00090 Uta, IT
DIN EN ISO 11885 DIN EN ISO 10304-1 DIN EN ISO 16911-1 DIN EN 13284-1 DIN EN 14790 + 3 more
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ACCREDIA 00258 Cairo Montenotte, IT
dbSNP rs1800562, rs1799945, rs1800730, r DIN EN 27888 DIN EN ISO 3093 ISO 4831 ISO 4832 + 3 more
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ACCREDIA 00733 Priolo Gargallo, IT
DIN EN 13126-19 DIN EN ISO 9377-2 DIN EN ISO 16911-1 DIN EN 14790 DIN EN 14792 + 3 more
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ACCREDIA 02393 Monte di Malo, IT
DIN EN 27888 ISO 4832 ISO 11731 ISO 16649-2 ISO 11290-1 + 3 more
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UKAS 9966 Isleworth, GB
Pure Tone Audiometry Tympanometry Impression Taking Hearing Aid Fitting Hearing Aid Diagnostics and Adjustments + 3 more
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DAkkS D-PL-18162-01-04 Bremen, DE
ID116 DIN EN ISO 12185 DIN EN ISO 20846 DIN EN ISO 3104 DIN EN ISO 2719 + 3 more
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UKAS 8714 Calow, GB
Audiology | Adult Hearing Services: Audiology | Otoscopy Audiology | Impression Taking Audiology | Hearing Aid Fitting Audiology | Real Ear Measurement + 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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