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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ALS Germany

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DAkkS D-PL-14162-01-03 Altenberge, DE
DIN EN ISO 15587-1 DIN EN ISO 15587-2 DIN EN ISO 14403-2 DIN 38405-4 DIN 38405-8 + 3 more
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ALS Laboratories (UK)

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UKAS 1282 Templeborough, GB
on BS 4401:Part 3:1970(1986) ISO 12966-2 AM/C/108 based on BS EN ISO BS 684 2.14:2001 BS EN 288-Part 9 :1999 + 3 more
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ALSTOM Transport VPF

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COFRAC 1-5603 Petite-Foret, FR
DIN EN ISO 11546-1 prEN 16185-2 EN 15595 (hors essais au
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ALTER TECHNOLOGY TÜV NORD, S.A. (Unipersonal)

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ENAC LE808 Tres Cantos, ES
IEC 60068-2-1 IEC 60068-2-2 UNE-EN 60068-2-14 UNE-EN 60068-2-78 IEC 60068-2-6 + 3 more
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AMETEK GmbH Geschäftsbereich Taylor Hobson

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DAkkS D-K-15032-02-00 Weiterstadt, DE
Railway brake — magnetic track brakes (U auch als Vor-Ort-Kalibrierung Rillentiefe Pt auf 0,2 µm Tiefeneinstellnormalen Rauheit auf Raunormalen + 3 more
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AN DIAG

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COFRAC 1-7298 Saint Etienne Du Rouvray, FR
NF X 43-269 NF X 43-269 - Annexe K NF X43-050 (parties utiles de ISO 22262-1 NF X 43-050 + 1 more
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APAVE EXPLOITATION FRANCE

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COFRAC 1-7202 Courbevoie, FR
DIN EN 14385 ETSI EN 301 489-1 V2.2.3 2019-11 NF X43-551 IS EN 1948-1:2006 2006 DIN EN 14789 + 3 more
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APEC Environmental

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UKAS 2136 Hebburn, GB
QOP03 based on HSG 248 QOP01 based on HSG 248 (HSG 248) – 2021 (PCM) based on HSG 248
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APEC Environmental

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UKAS 0347 Hebburn, GB
(HSG 264, 2012)
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APPLUS METROLOGY, S.L. (Unipersonal)

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ENAC LC10.017 Leganés, ES
CEM DI-002 EURAMET CG-2 CEM DI-014 CEM DI-006 CEM DI-016 + 3 more
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APPLUS NORCONTROL, S.L.(Unipersonal) (APPLUS)

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ENAC LE201 Sada, ES
ISO 6059 ASTM D 1209 UNE-EN ISO 8467 SM 4500-NH D 3 UNE 77048 + 3 more
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AQCLAB SOFTWARE QUALITY, S.L. (AQCLAB)

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ENAC LE2307 Puertollano, ES
ISO/IEC 25010 ISO/IEC 25040 ISO/IEC 25012 ISO/IEC 5259-2
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AQRAT

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DAkkS D-K-15060-01-00 Dettingen unter Teck, DE
Messschieber für 0 mm Außen-, Innen- und > 500 mm > 1000 mm Tiefenmessschieber * 0 mm Sondermessschieber 0 mm + 3 more
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AQUABIO

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COFRAC 1-7428 Saint Germain Du Puch, FR
DIN ISO 17289 NF T 90-395 NF T 90-354 NF T 90-393 NF T 90-328 + 3 more
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AQUANALYSE Laboratoire

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COFRAC 1-2194 Plancy L'Abbaye, FR
NF T 90-412 DIN EN ISO 7899-1 DIN EN ISO 10304-1 DIN EN 12880 ISO 5815-1 + 3 more
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ARMOUR Analytical Services

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UKAS 20835 Warmley, GB
(HSG 264, 2012)
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AS International Corporation

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UKAS 9924 Netherton, GB
ISO 10469:2006) (Based on ISO 10258:2018)
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AS International Corporation

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UKAS 4352 Liverpool, GB
ISO 5983-1:2005/Cor.1:2008, ISO20483:201 07L.1.07 based on ISO 6865:2001 ISO 712 07L.1.02 based on ISO 6496:1999, ISO 12966-2 + 3 more
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ASNR - Laboratoire de Biologie Médicale et d'anthroporadiométrie (LBMA)

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COFRAC 1-7441 Le Vesinet, FR
NF S92-501 (mars
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ASOCIACION EMPRESARIAL CENTRO TECNOLOGICO DEL METAL DE LA REGION DE MURCIA

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ENAC LC10.098 San Ginés, ES
EURAMET cg-18 CEM Ed CEM GUIA CEM TH-001 CEM TH-007 + 3 more
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ASOCIACION INSTITUTO DE BIOMECANICA DE VALENCIA (IBV)

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ENAC LE1105 Valencia, ES
DIN EN 13864 DIN EN 14808 DIN EN 12235 ISO 2549 ISO 4919 + 3 more
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ASOCIACIÓN DE INVESTIGACIÓN DE LA INDUSTRIA DEL JUGUETE, CONEXAS Y AFINES. (AIJU)

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ENAC LE016 Ibi, ES
UNE-EN 71-1 ISO 8124-1 ISO 8124-2 ASTM F963-17 (NM_001718: c.1-c.500) + 3 more
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ASOCIACIÓN DE INVESTIGACIÓN DE LA INDUSTRIA TEXTIL Y COSMÉTICA (AITEX)

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ENAC LE025 Alcoi, ES
DIN EN ISO 11612 DIN EN ISO 3175-2 ISO 17493 DIN EN ISO 17227 DIN EN ISO 6330 + 3 more
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ASOCIACIÓN DE INVESTIGACIÓN DE LAS INDUSTRIAS CERAMICAS. (AICE) INSTITUTO DE TECNOLOGIA CERAMICA (ITC)

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ENAC LE004 Castellón de la Plana, ES
UNE-EN ISO 10545-2 UNE-EN ISO 10545-3 ASTM C373 UNE-EN ISO 10545-4 UNE-EN ISO 10545-5 + 3 more
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ASOCIACIÓN DE INVESTIGACIÓN PARA LA INDUSTRIA DEL CALZADO Y CONEXAS (INESCOP)

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ENAC LE146 Elda, ES
DIN EN ISO 20344 DIN EN 13634 BS EN ISO 20344::2011 Clause 5.1 DIN EN ISO 22568-1 ISO 22568-1: 2019 Clause 5.2.1 + 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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