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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Unilabs Diagnostics BV (regio West)

RvA M291 Amsterdam, NL

Massaspectrometrie Pre-analyse Moleculaire diagnostiek d.m.v. PCR Fenotypische karakterisatie Antilichaambepaling d.m.v. immuno- assay + 3 more

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Unionchimica s.a.s. di Paola Croce & C.

ACCREDIA 01297 Modena, IT

ISO 18787 ISO 4832 ISO 15214 ISO 21527-1 ISO 21527-2 + 3 more

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Unione Italiana Vini Laboratori srl

ACCREDIA 00304 Barberino Tavarnelle, IT

ISO 21527-1 ISO 21527-2 DIN EN ISO 4833-1 DIN EN ISO 6888-2 ISO 11731 + 3 more

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Uniper Technologies

UKAS 2200 Ratcliffe-on-Soar, GB

ISO 11948-1 DIN EN 13126-19 DIN EN ISO 16911-1 DIN EN 13284-1 DIN EN 14790 + 3 more

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United Kingdom Health Security Agency, an Executive Agency of the Department of Health

UKAS 8213 Bordesley Green East, GB

Serum / Plasma Quantitation of: | Roche Department of Health Materials/ | Type of test/Properties Nose and/or throat Qualitative molecular Nose and/or throat Qualitative molecular + 3 more

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Unità Operativa Complessa 'Laboratorio Medico di Sanità Pubblica' Dipartimento di Prevenzione Azienda Sanitaria Provinciale di Palermo (Regione Sicilia)

ACCREDIA 00982 Palermo, IT

ISO 21527-1 ISO 21527-2 DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 7932 + 3 more

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Unità Operativa Semplice Dipartimentale 'Tossicologia e Biochimca' Dipartimento Interaziendale di Diagnostica di Laboratorio - Azienda Sanitaria Provinciale di Palermo

ACCREDIA 01486 Palermo, IT

DIN EN 27888 DIN EN ISO 10523 ISO 10523 BS EN ISO 7027-1:2016 ISO 15680 + 3 more

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UMCG

RvA M078 Groningen, NL

11p15 MLPA Elektroforese/Iso-electrofocussing Massaspectrometrie Spectrofotometrie Fluorometrie + 3 more

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Universitair Medisch Centrum Utrecht

RvA M049 Utrecht, NL

11p15 MLPA Massaspectrometrie Immunoflowcytometrie Monsterverwerking: registratie, opslag Histochemische kleuringen + 3 more

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Universiteit Gent - LABORATORIUM VOOR TOXICOLOGIE - Ref4U

BELAC 488-CAL Gent, BE

Cortisol Testosteron 17-Alpha-OH-Progesteron 25-Hydroxy Vitamin D3 Total T4 | Siemens Atellica Total Thyrox + 3 more

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University College London Hospitals NHS Foundation Trust

UKAS 8116 Queen Square, GB

Glucose Calcium Beta-trace Protein Ferritin Cytomegalovirus + 3 more

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University College London Hospitals NHS Foundation Trust

UKAS 8341 Queen Square, GB

Methylmalonic acid Cardiolipin Metabolic Biochemistry Biochemical examination activities for t 5-methyltetrahydrofolate + 3 more

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University College London Hospitals NHS Foundation Trust

UKAS 8045 National Hospital for Neurology and Neurosurgery (UCLH), GB

Glucose Beta-trace Protein Ferritin S100B Lactate + 3 more

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University Hospital Southampton NHS Foundation Trust

UKAS 8149 Southampton, GB

HbA1c D-Dimer Protein C Lupus Screen HbA2 + 3 more

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University Hospital Southampton NHS Foundation Trust

UKAS 8178 Southampton, GB

Helicobacter pylori Hepatitis-B-surface-Antigen Squamous-cell-carcinoma Cytomegalovirus Mycobacterium leprae + 3 more

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University Hospital Southampton NHS Foundation Trust

UKAS 8696 Southampton, GB

Albumin Calprotectin Haptoglobin HLA-B27 Complement C3 + 3 more

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University Hospital Southampton NHS Foundation Trust

UKAS 8403 Southampton, GB

Astrovirus Influenza B Giardia Rotavirus Human Metapneumovirus + 3 more

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UHS

UKAS 9005 Salisbury, GB

D816V mutation Molecular Genetics Molecular genetic examinations for the p (1A) (ii) genotyping of specific mutatio Screening for unknown somatic variants i + 3 more

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University Hospitals Birmingham NHS Foundation Trust

UKAS 8784 Edgbaston, GB

HbA1c D-Dimer Fibrinogen INR Anti-Xa + 3 more

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University Hospitals Birmingham NHS Foundation Trust

UKAS 8910 Edgbaston, GB

Digoxin Cortisol Glucose CA 15-3 CA 19-9 + 3 more

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University Hospitals Birmingham NHS Foundation Trust

UKAS 10141 Edgbaston, GB

Helicobacter pylori Epstein-Barr-Virus Helicobater pylori Hepatitis B-Virus Iron + 3 more

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University Hospitals Birmingham NHS Foundation Trust

UKAS 8760 Edgbaston, GB

CMV EBV HBV Hepatitis-B-core-IgM Measles IgG + 3 more

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University Hospitals Birmingham NHS Foundation Trust

UKAS 8759 Edgbaston, GB

Detection of : | Manual Indirect Mutation Immunocytochemistry of Histopathology ex ALK Translocation HER2 Expression testing FOR Breast and G + 3 more

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University Hospitals Coventry & Warwickshire NHS Trust

UKAS 22752 Rugby, GB

Faeces Quantification of human globin | Faeces Quantification of human globin |

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University Hospitals Coventry and Warwickshire NHS Trust

UKAS 8720 Coventry, GB

Ethanol Digoxin Cortisol Glucose CA 125 + 3 more

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