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
🇩🇪 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-11035-01-02 Essen, DE
ID136 > 140 DIN EN 143 DIN EN ISO 21149 DIN EN 13274-1 + 3 more
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HLA-Typsierung (HLA-B*27) Azoospermiefaktor (AZFa/AZFb/AZFc) Chorea Huntington (HTT) OMIM# 143100 + 3 more
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UKAS 9730 Govan, GB
staining based on HSG 248. (PCM) based on HSG 248 (HSG 248) – 2021 QSOP 03 based on HSG 248 QSOP 01 based on HSG 248
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DAkkS D-K-11134-03-00 Kaiser-Wilhelm-Koog, DE
− Stromstärkeverhältnis - Gleichspannung / Messgeräte - Wechselspannung Gleichstromstärke > 100 µA + 3 more
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COFRAC 1-10039 Marseille, FR
NF X 43-050 NF X43-050 (parties ISO 22262-2 NF ISO 22262-1 et/ou ISO 22262-1
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COFRAC 1-10029 Colomiers, FR
NF X 43-050 NF X43-050 (parties
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COFRAC 1-10041 Villebon-Sur-Yvette, FR
NF X 46-032 NF X 43-050 NF X43-050 (parties
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ENAC LE334 San Fernando de Henares, ES
EPA 9056 ISO 13167 SM 3120 B ISO 13166 UNE 73350-1
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DAkkS D-ML-17345-01-01 Frankfurt, DE
Faktor-V-Mangel (F5 inklusive Thrombozyten, PAC-1 Bindung CASQ2, KCNJ2, CALM2, CALM3, TECRL ) dbSNP r6027 ) Kardiomyopathie (PKP2, DSG2, SCN5A ) + 3 more
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DAkkS D-ML-17345-01-00 Frankfurt, DE
aller Untersuchungsverfahren im flexible Webpräsenz des Medizinischen Laboratoriu (VWF:CB) vWF-Multimere Erythrozyten + 3 more
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DAkkS D-ML-13219-01-01 Dresden, DE
CD34+ Stammzellen Erythrozyten Hämoglobin Leukozyten Bakterien- und Hefezellen + 3 more
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DAkkS D-ML-13219-01-00 Dresden, DE
Akkreditierungsbereich. Die Liste ist Erythrozyten Leukozyten Hämatokrit Thrombozyten + 3 more
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DAkkS D-ML-13461-01-01 Bad Kreuznach, DE
AB0-System Isoagglutinine (Serumeigenschaften) Rh-Merkmal D Rh-Untergruppen + 3 more
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DAkkS D-ML-13327-01-00 Hagen, DE
AB0-Blutgruppen-Merkmale Isoagglutinine (Serumeigenschaften) Rhesusmerkmale K-Merkmale + 3 more
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DAkkS D-K-20506-01-01 Aachen, DE
am Standort DSA Daten- und Systemtechnik Schreibendes Bremsmessgerät (HU-Adapter) Beschleunigung + 1 more
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DAkkS D-PL-14555-02-01 Karlsruhe, DE
ASTM D 3227 DIN 3500 EN 14350-2 DIN EN 12350-9 DIN 53512 + 3 more
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DAkkS D-PL-12098-01-01 Karlsruhe, DE
(SPG42), SPAST (SPG4), SPG11, SPG7, VAMP DIN EN 30-1-1 DIN EN 30-1-2 DIN 13013 DIN 13014 + 3 more
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UKAS 7783 Belfast, GB
DIN EN 12469 EN 14175-3-2004
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UKAS 4303 Ammanford, GB
1) MS08P based on BS EN ISO MS02P based on BS EN ISO MS03P based on BS EN ISO MS06P based on BS EN ISO MF07P based on BS EN ISO + 3 more
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DAkkS D-K-23327-01-01 Bad Camberg, DE
Metrologic Group GmbH, nalen von: Wernau, D Neuss, D ≤ 1515 mm Wetzlar, D S.p.A., Turin, I + 3 more
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ACCREDIA 02012 Roma, IT
ETSI EN 319 412 ETSI EN 319 401 ETSI EN 319 411-2 ETSI EN 319 411-1
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DAkkS D-PL-17009-06-00 Wiesbaden, DE
DIN EN 60950-1 EN IEC 62368-1 DIN EN 60204-1 DIN EN 60825-1 DIN EN 61010-1 + 3 more
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DAkkS D-PL-17009-02-00 Mainz, DE
DIN 31051 DIN EN 1005-1 DIN EN 1993-1-1 DIN EN 1993-1 DIN EN 1993-6 + 3 more
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DAkkS D-PL-17009-05-01 Haan, DE
DIN 58214 DIN EN 15443 Vitamin 812 DIN EN ISO 3960 ASTM D 3343 + 3 more
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DAkkS D-PL-17009-07-02 Köln, DE
IEC 60335-1: 2010 IEC 60335-2-29 DIN EN 60335-2-29 IEC 60335-2-65 DIN EN 60335-2-65 + 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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