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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MECHAUP

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ENAC LE2894 Martos, ES
ISO 10605 ISO 16750-2: 2012 ISO 16750-4 UNE-EN IEC 60068-2-14 UNE-EN IEC 60068-2-38 + 3 more
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ACCREDIA 01718 Bellizzi, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN 10160 DIN EN ISO 17637 DIN EN ISO 17638 + 3 more
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BELAC 670-CAL Pajottegem, BE
Optical Density - Plate 405nm Optical Density - SNDP 405nm Optical Density - SNDP 340 nm
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ACCREDIA 00906 Cavallermaggiore, IT
ISO 21527-1 DIN EN 13126-19 DIN EN 13657 DIN EN ISO 10304-1 DIN EN ISO 17294-2 + 3 more
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MEDIMAX

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ACCREDIA 01100 Roma, IT
DIN EN ISO 17141 ISO 11731 DIN EN ISO 4833-2 ISO 16649-2 DIN EN ISO 15213-2 + 3 more
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MEDIO CHIAMPO

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ACCREDIA 02269 Zermeghedo, IT
DIN EN ISO 10523 DIN EN ISO 10304-1 DIN EN ISO 20236 ISO 10304-1 ISO 10523 + 3 more
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ACCREDIA 01007 Marsala, IT
ISO 4832 ISO 21527-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 11290-1 + 3 more
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MEGA-LAB

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ACCREDIA 01227 Albano Sant'Alessandro, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN ISO 4136 DIN EN ISO 9016 DIN EN ISO 643 + 3 more
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DAkkS D-K-20515-01-00 Filderstadt, DE
Temperaturmessgrößen - Direktanzeigende Thermometer - Thermopaare, Thermoelemente direktanzeigende > 200 °C Typ K –200 °C + 3 more
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MESSRING

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DAkkS D-K-22828-01-01 Ingolstadt, DE
Railway brake — disc brake components (U Kraft Gurtkraftaufnehmer SM 4500-N
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COFRAC 1-6126 Escaudain, FR
NF X 43-050 NF X 43-269 ISO 16000-7 FD X 46-033
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ACCREDIA 01118 Ronchi dei Legionari, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO DIN EN ISO 4136 DIN EN ISO 5173 + 3 more
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METALCAM SPA

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ACCREDIA 01323 Breno, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN ISO 6506-1 DIN EN ISO 6507-1 DIN EN ISO 643 + 3 more
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ACCREDIA 01232 Bari, IT
DIN EN ISO 16810 DIN EN ISO 13588 DIN EN ISO 17637 DIN EN 13018 DIN EN ISO 5579 + 3 more
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ENAC LC10.163 Badalona, ES
Rangos de caudal (m3/h): 1 m3/h ≤ Q < 25
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METRALAB SRL

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ACCREDIA 00477 Cadorago, IT
ISO 4831 ISO 4832 ISO 15214 ISO 21527-1 ISO 21527-2 + 3 more
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ENAC LC10.236 San Ginés, ES
5 kg 1 g 2 g 5 g 10 g 20 g 50 g 100 g 200 g 5 10 kg 20 kg 100 kg 200 kg 500 kg 1000 kg 1 g 2 g 5 g 10 g 20 g 50 g 100 g 200 g 5 + 2 more
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METRODIM SRL

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BELAC 337-CAL Herstal, BE
Cales-étalons Eindmaten/Gauge blocks Acier/staal/steel Carbure de tungstène/wolfraamcarbide/tun Etalons pour Micromètres d’extérieur Ins Pieds à coulisse + 3 more
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METROPACK

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COFRAC 1-6986 Reims, FR
DIN EN 303-5 DIN EN ISO 12759 ASTM D4169 ASTM D4332 ASTM D5276 + 3 more
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DAkkS D-PL-14239-01-01 Zeitz, DE
DIN EN 27888 DIN EN 12880 DIN EN 932-1 DIN 18123 DIN EN 451-1 + 3 more
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MICRO SRL

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ACCREDIA 00747 Sulbiate, IT
ISO 21527-1 ISO 21527-2 ISO 11290-1 ISO 11290-2 ISO 21528-2 + 3 more
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MICROAMB

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ENAC LE2760 Bollullos de la Mitación, ES
ISO 5667-10 ISO 5667-6 ISO 5667-5 SM 4500-H+ B SM 2510 B + 3 more
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ACCREDIA 00922 Inverigo, IT
ISO 18787 ISO 4832 ISO 15214 ISO 21527-1 ISO 21527-2 + 3 more
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COFRAC 1-1151 Saint-Julien-Les-Metz, FR
DIN EN 27888 DIN EN 12880 DIN EN ISO 11885 DIN EN ISO 10523 DIN EN ISO 10304-1 + 3 more
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MIGLIORE LAB

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ACCREDIA 00214 Roccapiemonte - Fraz. Casali, IT
ISO 6222 EPA 524.2 1995 APAT CNR IRSA 2060 Man 29 2003 APAT CNR IRSA 5130 Man 29 2003 APAT CNR IRSA 2090 B Man 29 2003 + 2 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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