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 1-2127 Rte D'Eljadida Km 8 Bp 7731 Oulfa | - Casablanca | Maroc, MA
DIN EN 14389 DIN EN ISO 105-X12 DIN EN ISO 3071 DIN EN ISO 14184-1 DIN EN ISO 14362-1 + 3 more
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ACCREDIA 00128 Salzano, IT
DIN EN ISO 2719 DIN EN ISO 19458 DIN EN 13126-19 DIN EN ISO 11885 DIN EN 15408 + 3 more
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ACCREDIA 01379 Correggio, IT
DIN EN ISO 10140-2 DIN EN 1026 DIN EN 1027 DIN EN 12211 DIN EN 14609 + 3 more
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COFRAC 1-6751 Laneuville-Devant-Nancy, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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COFRAC 1-2350 Villepinte, FR
DIN 51750-3 DIN EN 15002 NF X 43-050 NF X 43-269 NF X 43-269 – Annexe K + 3 more
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ACCREDIA 01347 Molfetta, IT
DIN EN 13725:2003-07 und Berichtigung UNI EN 13725
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DAkkS D-PL-11117-01-00 Nürnberg, DE
DIN EN 300 132-3: 2005 DIN EN 62196-1: 2015 IEC 60512-4-1 DIN EN 1348 DIN EN 12004-2 + 3 more
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ENAC LE894 Bellaterra, ES
Railway brake handbooks (UIC 547) Railway braking — thermal analysis (EN 1 ISO 5660-1 DIN EN IEC 60068-2-52 IEC 61000-4-2: 2008 + 3 more
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ACCREDIA 02027 Isola del Liri, IT
DIN EN ISO 4833-1 DIN EN ISO 11885 DIN EN 13657 DIN EN 12457-2 ISO 4833-1 + 3 more
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LIFEANALYTICS

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ACCREDIA 00113 Oderzo, IT
dbSNP rs1800562, rs1799945, rs1800730, r IEC 60512-17-1 DIN EN ISO 3960 ISO 18787 ISO 4832 + 3 more
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ENAC LE2027 Terrassa, ES
IEC 61643-11 IEC 61643-31 UNE 21186 UNE-EN IEC 63052 EN 61643-31 + 3 more
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LILANO

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COFRAC 1-2080 Saint-Lo, FR
DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 6888-2 DIN EN ISO 11290-1 + 3 more
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ACCREDIA 01865 San Daniele del Friuli, IT
DIN EN ISO 6508-1 DIN EN 1484 ASTM E 8 ISO 6508-1 ISO 14879-1 + 3 more
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DAkkS D-PL-17066-01-01 Essen, DE
DIN EN ISO 9934-1 DIN EN 50178: 1998 ISO 21527-1 DIN EN 932-1 DIN EN 932-2 + 3 more
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ENAC LC10.040 Rubí, ES
10 · 10-6 mol/mol  C  20 · 10-6 mol/mo 10 · 10-6 mol/mol  C  5000 · 10-6 mol/ 1 · 10-6 mol/mol  C  10 · 10-6 mol/mol 1 · 10-6 mol/mol  C  5 · 10-6 mol/mol 10 · 10-6 mol/mol  C  100 · 10-6 mol/m + 3 more
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DAkkS D-PL-14484-02-02 Rostock, DE
DIN EN 27888 DIN EN ISO 659 DIN EN ISO 665 DIN EN ISO 7971-3 DIN EN ISO 658 + 3 more
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COFRAC 1-0606 Trappes Cedex, FR
DIN EN IEC 60942:2018 1000 Hz DIN EN 60068-2-43 DIN EN 60529 DIN EN 62262 DIN EN 60825-1 + 3 more
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LOD SRL

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ACCREDIA 01448 Udine, IT
DIN EN 13725:2003-07 und Berichtigung DIN EN 16841-1 UNI 7133-3 DIN EN 16841-1 DIN EN 16841-2 + 1 more
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ACCREDIA 00571 Comun Nuovo, IT
ISO 15214 DIN EN ISO 4833-1 DIN EN ISO 4833-2 DIN EN ISO 6888-1 DIN EN ISO 15213-2 + 3 more
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BELAC 054-TEST Geel, BE
ISO 4832 ISO 15214 ISO 16649-2 ISO 7932 ISO 15213-2 + 3 more
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ACCREDIA 01205 Carpiano, IT
DIN EN 933-1 DIN EN 933-3 DIN EN 933-4 DIN EN 1097-2 DIN EN 1097-6 + 3 more
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RvA I081 Rotterdam, NL
NEN 3650-1 NEN 3650-2 NEN 3651 NEN 3650-3 NPR 3659
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COFRAC 1-5826 Bezons, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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COFRAC 1-1531 Venissieux, FR
DIN EN 27888 DIN EN ISO 16212 DIN EN ISO 18415 DIN EN ISO 18416 DIN EN ISO 21149 + 3 more
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ACCREDIA 00804 Capannori, IT
DIN EN ISO 17294-2 DIN EN 846-7 ISO 11731 ISO 16266-2 ISO 6222 + 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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