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-20691-01-01 Rostock, DE
IEC 60364-5-52 ISO 14243-1 ISO 14243-2 ISO 14879-1 ISO 7206-6 + 3 more
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ACCREDIA 00418 Motta di Livenza, IT
DIN EN 13126-19 DIN EN 13657 DIN EN ISO 17294-2 DIN EN 1484 DIN EN 13137 + 3 more
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ACCREDIA 00083 Milano, IT
Salt spray / neutral salt fog test (ISO ISO 11948-1 DIN EN 62471: 2009 ISO 2808 ISO 2813 + 3 more
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COFRAC 1-7140 Nantes Cedex 3, FR
DIN EN ISO 5983-2 DIN EN 27888 ISO 6496 ISO 4832 ISO 15214 + 3 more
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ACCREDIA 02201 Rosignano Solvay, IT
APAT CNR IRSA 1030 Man 29 2003 APAT CNR IRSA 3010 A APAT CNR IRSA 4080 Man 29 2003 APAT CNR IRSA 3200 A1 Man 29 2003
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ISO 11083 ISO 6878 SM 4500-H+ B SM 2510 B UNE-EN 872 + 3 more
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ACCREDIA 00830 Villacidro, IT
ISO 4832 ISO 21527-1 ISO 21527-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 + 3 more
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INSPECTA SRL

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ACCREDIA 01272 Ravenna, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN ISO 4136 DIN EN ISO 5173 DIN EN ISO 9016 + 3 more
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DAkkS D-K-15027-01-00 Düsseldorf, DE
Plasma, Serum, Plasma 0,5 mmol/L Plasma, Serum, Plasma 50 mmol/L Plasma, Serum, Plasma Material Urin + 3 more
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BELAC 282-TEST Asse, BE
ISO 28862 ISO 14375 ISO 8317 UNE-EN 862 EN 14375 + 3 more
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ENAC LE1830 Vilafranca del Penedés, ES
AOAC 979.07 OIV-MA-AS2-01 OIV-MA-AS2-03B OIV-MA-AS313-15 OIV-MA-AS314-02 + 3 more
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BELAC 241-TEST Bruxelles, BE
Eigen methode Methode propre Bloed Sang Bloed, urine Sang, urine TOX/M.90; TOX/M.96 TOX/M.32; TOX/M.36; TOX/M.39; TOX/M.46; + 2 more
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COFRAC 1-1872 - | Bp 1274 Antananarivo 101 | Madagascar, MG
DIN EN 27888 ISO 21527-1 ISO 21527-2 DIN EN ISO 6579-1 DIN EN ISO 6888-2 + 3 more
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BELAC 060-TEST Liège, BE
Quecksilber (Hg) IEC 60332-1-2: 2004-07 ISO 11731 ISO 5667-4 ISO 5667-10 + 3 more
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ENAC LE1703 Madrid, ES
ISO 11731 WP04 based upon BS EN ISO 10304- EPA 200.8 ISO 15061 UNE-EN ISO 7027-1 + 3 more
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ENAC LE2208 Colmenar Viejo, ES
UNE-EN ISO 5764 OIV-MA-AS312-01 OIV-MA-AS2-03B OIV-MA-AS313-15 OIV-MA-AS313-02 + 3 more
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ENAC LC10.007 Torrejón de Ardoz, ES
ASTM D 4052 ASTM D 93 ASTM D 2386 ASTM D 86 ASTM D 976 + 3 more
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ENAC LE1285 Torrejón de Ardoz, ES
ISO 11665-4 UNE-EN ISO 10704 UNE 73350-1 UNE 73311-5 UNE 31010 + 1 more
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ENAC LE257 Zaragoza, ES
DIN EN 50155 IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 + 3 more
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ENAC LE554 Paterna, ES
Radiated emissions (CISPR 32) DIN EN 62271-102 DIN IEC 60060-1 IEC 61000-4-2: 2008 IEC 61000-4-4: 2012 + 3 more
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ENAC LE678 Paterna, ES
ASTM D5276 ASTM D642 ASTM D4728 ASTM D882 ASTM D 999 + 3 more
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ENAC LC10.149 Madrid, ES
(380 - 780 nm) 1 < R ≤ 100 0,01< DO ≤ 0,1 0,1 < DO ≤ 0,3 1,1 < DO <
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ENAC LE394 Vilagarcía de Arousa, ES
ISO 11452-6 DIN CEN ISO 15216-2 ISO 16649-3 UNE-EN 14526 ISO 15216-1 + 3 more
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ENAC LE1286 Bétera, ES
10/1500 DIN EN 1104 ISO 16869 ISO 22196 DIN 52170-2 + 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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