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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Conatex Ludwig Colbus

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DAkkS D-K-15160-01-00 St. Wendel, DE
Tensile testing of metallic materials (I Vickers hardness test (ISO 6507) Railway braking — urban guided transport Taupunkttemperatur Temperatur −40 °C + 3 more
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Conserlab Sardegna Srl

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ACCREDIA 01856 Cagliari, IT
APAT CNR IRSA 2030 Man 29 2003 APAT CNR IRSA 2060 Man 29 2003 CNR IRSA 1 Q 64 Vol 3 1985
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Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria (CREA) - Centro di ricerca Difesa e Certificazione - Unità locale operativa n. RM/6, Laboratorio di Fitopatologia-DIALAB

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ACCREDIA 01215 Roma, IT
EPPO PM 7/79 rev 2 2016/Cor 2017 SFN DTU n.12 r.0 2022 EPPO PM 7/18 rev 3 2020 - solo/only EPPO PM 7/14 rev 2 2014 Appendix 3 EPPO PM 7/146 rev 2 2022 Appendix 4A + 3 more
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Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria - Centro di Ricerca Agricoltura e Ambiente (CREA-AA)

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ACCREDIA 00177 Bologna, IT
UNI 11382 UNI 11299 DM 25/07/2003 GU n 185 11/08/2003
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Consorzio Acquedottistico Marsicano S.p.A

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ACCREDIA 01915 Avezzano, IT
DIN EN 27888 DIN EN ISO 10523 DIN EN ISO 10304-1 ISO 10304-1 DIN EN ISO 9308-2 + 3 more
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Consorzio Global Quality

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ACCREDIA 00887 Fondi, IT
BS EN 15662 UNI EN 15662
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Consorzio di ricerca unico d'Abruzzo

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ACCREDIA 02398 Avezzano, IT
APAT CNR IRSA 2060 Man 29 2003
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Consorzio per il Centro Interuniversitario di Biologia Marina ed Ecologia Applicata 'G. Bacci'

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ACCREDIA 01043 Livorno, IT
DIN EN 15936 DIN EN ISO 16703 ISO 11465 DIN EN ISO 10253 ISO 16703 + 3 more
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Consorzio per la Ricerca nel Settore della Filiera Lattiero-Casearia e dell'Agroalimentare (CoRFiLaC)

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ACCREDIA 00285 Ragusa, IT
ISO 6496 DIN EN ISO 4833-1 DIN EN ISO 6888-2 DIN EN ISO 8968-1 ISO 4833-1 + 3 more
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Constellium C-TEC - Laboratoire A2C FEM FAT

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COFRAC 1-1656 Voreppe Cedex, FR
Tensile testing of metallic materials (I DIN EN 12004-2 ASTM E8/E 8M DIN ISO 10275 DIN ISO 10113 + 3 more
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Construction Testing Solutions

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UKAS 4161 Syston, GB
DIN EN 12350-1 DIN EN 12350-6 DIN EN 12390-1 DIN EN 12390-2 DIN EN 12390-3 + 3 more
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Consula srl

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ACCREDIA 01373 Noventa di Piave, IT
ISO 4832 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 11290-2 DIN EN ISO 21149 + 3 more
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Control Union Certifications

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RvA I192 Zwolle, NL
(CD45/CD19/CD5/CD20/CD23/CD20 DIN 10172-3
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Cooper Health Clinic Laboratory

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DAkkS D-ML-21351-01-00 Dubai, AE
Absolutdruck tration von Cholesterol Glucose Calcium AST + 3 more
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Core Surveys

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UKAS 6830 Polegate, GB
(HSG 264, 2012) (HSG 248) – 2021 (PCM) based on HSG 248
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Coretec - Service

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DAkkS D-K-21661-01-00 Linden, DE
Railway brakes — brake performance (UIC positiver Überdruck Absolutdruck Positiver und negativer -3,92 kPa 4,02 kPa + 2 more
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Corilab Consulenza e sicurezza srl

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ACCREDIA 00670 Frascati, IT
ISO 4832 ISO 16649-2 ISO 21528-2 ISO 6222 ISO 7899-2 + 3 more
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Corserv Solutions

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UKAS 0756 Redruth, GB
DIN EN 12390-1 DIN EN 12390-2 DIN EN 12390-3 DIN EN 12504-1 DIN EN 932-1 + 3 more
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Coteca srl Consulenze Tecniche Agroindustriali

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ACCREDIA 01905 Pisa, IT
DIN EN ISO 12966-2 ISO 3656 DIN EN ISO 3960 DIN EN 12266-2 BS EN 15662 + 3 more
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Cotesa GmbH Werkstofflabor

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DAkkS D-PL-20304-01-00 Mittweida, DE
und VDI/VDE 2604 delA, 2615_2617 delAAG, 2850 DIN EN 50178: 1998 DIN EN ISO 1172 DIN EN 2564 + 3 more
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County Durham and Darlington NHS Foundation Trust

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UKAS 9341 Durham, GB
Serum | Detection of: bioMérieux VIDAS u Faeces | SOP: MIC-UKHSA-CDRN-EP-1 Faeces | Campylobacter spp. Faeces | Shigella spp. Routine samples: | Isolation of microorg + 3 more
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County Durham and Darlington NHS Foundation Trust

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UKAS 8666 Durham, GB
Digoxin Cortisol NTproBNP D-Dimer Ferritin + 3 more
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County Durham and Darlington NHS Foundation Trust

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UKAS 9717 Durham, GB
Tissue: biopsy, excision, and | Histopat FFPE slides | Lymphatic endothelium D2-4 Tissue for frozen sections | LP/PA/HP/SO FFPE slides | CP/PA/CP/SOP6 FFPE slides | CP/PA/CP/SOP8 + 3 more
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Cowley Specsavers Hearcare

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UKAS 9904 Whiteley, GB
Audiology | Adult Hearing Services: Audiology | Otoscopy Audiology | History Taking Audiology | Pure Tone Audiometry Audiology | Impression Taking + 2 more
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Croma Lab Srl

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ACCREDIA 01380 Pomezia, IT
ISO 21527-1 DIN ISO 16649-2 DIN EN ISO 4833-1 DIN EN ISO 18593 DIN EN ISO 19458 + 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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