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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DAkkS D-PL-11118-01-01 Rudolstadt, DE
und VDI/VDE 2604 17 I/D rs1799752 229600 (A150P u. A175 AK gegen BP 180 (p.Ala222Val); dbSNP rs1801133 + 3 more
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ACCREDIA 00924 Terno d'Isola, IT
DIN EN 13126-19 DIN EN ISO 11885 DIN EN 13657 DIN EN ISO 10523 DIN EN ISO 10304-1 + 3 more
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UKAS 4265 Dartford, GB
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DAkkS D-PL-11130-01-02 Hamburg, DE
Salt spray / neutral salt fog test (ISO DIN EN 50155 DIN EN IEC 60068-2-11 DIN EN 60068-2-14 DIN EN 60068-2-30 + 3 more
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ACCREDIA 02373 Somaglia, IT
Circ Min Trasp n 18911 02/08/2018
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ACCREDIA 00238 Cremona, IT
DIN EN 27888 DIN EN ISO 19458 DIN EN ISO 17294-2 DIN EN 1484 DIN EN 846-7 + 3 more
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ACCREDIA 01864 Vicenza, IT
DM 06/09/1994 GU n 288 10/12/1994 Reg CE 761/2009 23/07/2009 GU CE
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ACCREDIA 00722 Atena Lucana, IT
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BELAC 392-TEST Liège, BE
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ACCREDIA 01437 Latina Scalo, IT
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DAkkS D-K-21200-01-02 Wiesenthal, DE
Tensile testing of metallic materials (I Vickers hardness test (ISO 6507) Werkstoffprüfmaschinen (Härteskalen HV5 bis HV100) Kraftmesseinrichtung von + 3 more
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Salt spray / neutral salt fog test (ISO DIN EN 20105 DIN EN ISO 4624 DIN EN 12720 DIN EN 12721 + 3 more
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COFRAC 1-7030 Brest, FR
NF X 43-257 NF X 43-050 NF X 43-269 NF X 43-275 ISO 16000-7 + 1 more
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DAkkS D-PL-14361-01-01 Speyer, DE
ID116 (LBLS) (OMIM 611105) (c.228- DIN 51757 ASTM D 4052 DIN EN ISO 12185 + 3 more
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ACCREDIA 02348 Santena, IT
ASTM D4052-22 ASTM D445-24 ASTM D2270-24 ASTM D93-26 ASTM D5950-25 + 1 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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