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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UKAS 20653 Sutton, GB
Cortisol Glucose Gentamicin Vancomycin Albumin + 3 more
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Tissue samples: Fixed, fresh | The exami Formalin-fixed paraffin | B cells, plasm Formalin-fixed paraffin | Langerhans cel Formalin-fixed paraffin | Normal and neo Formalin-fixed paraffin | Inducer T cell + 3 more
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UKAS 8097 Chelsea, GB
Cortisol Glucose Gentamicin Vancomycin Albumin + 3 more
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UKAS 9578 Dudley, GB
HUMAN BODY FLUIDS: Biochemistry examinat Plasma: EDTA Hepatitis B Virus DNA (Vira Whole Blood :EDTA | Atypical antibody sc Whole blood & plasma: | Blood Group (Aut MCH, MCHC, PLT, RDW, NEUT, | SOP/H/254 + 3 more
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UKAS 7982 Wolverhampton, GB
Audiology | Adult Hearing Services: Audiology | Otoscopy Audiology | History Taking Audiology | Pure Tone Audiometry Audiology | Impression Taking + 3 more
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UKAS 8665 Wolverhampton, GB
Cytomegalovirus Fungi Measurement Identification of: | Using culture media Leucocytes: | 8 Colours + 3 more
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UKAS 9580 Wolverhampton, GB
Tryptase Measurement Detection of : | Manual Indirect Myositis Immunology examination activities for th + 3 more
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UKAS 8663 Wolverhampton, GB
Ethanol Digoxin Cortisol Glucose AFP + 3 more
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UKAS 8657 Wolverhampton, GB
D-Dimer MCH MCHC MCV Haemoglobin + 3 more
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UKAS 7977 Shrewsbury, GB
Pure Tone Audiometry Impression Taking Hearing Aid Fitting Assessment Rehabilitation + 3 more
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UKAS 7758 Doncaster, GB
DIN EN 12504-1 DIN EN 933-1 DIN EN 933-11 DIN EN 1097-5 DIN EN ISO17892-12 + 3 more
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UKAS 0630 Amesbury, GB
SPECTRAL TRANSMITTANCE Wavelength 380 nm materials
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UKAS 8642 Liverpool, GB
Glucose Phenobarbital Albumin Levetiracetam Pregabalin + 3 more
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Thomas Dudley

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UKAS 20013 Dudley, GB
Laktoseintoleranz (LCT -14055 DIN EN 997 BS 1212-2:1990 Clause 4 BS 1212-3:1990 Clause 4 BS 1212-4:1991 Clause 4, 13, 14
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UKAS 0249 Kenilworth, GB
LENGTH LENGTH (cont’d)
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UKAS 8916 Lowe’s Bridge, GB
Ethanol Digoxin HbA1c Cortisol Glucose + 3 more
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UKAS 8915 Lowe’s Bridge, GB
Ethanol Digoxin HbA1c Cortisol Glucose + 3 more
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UKAS 8917 Lowe’s Bridge, GB
D-Dimer Measurement Detection of the following: | Special St Antibodies: | Adrenal Factor assays: | Werfen ACL TOP 550 + 3 more
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UKAS 8914 Torquay, GB
Cytomegalovirus Fungi Measurement Nuclear protein in lung and thyroid | Th Detection of the following: | Special St + 3 more
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UKAS 8299 Torbay Hospital, GB
Routine Hearing Services: Otoscopy Hearing Diagnostic History Taking Pure Tone Audiometry Tympanometry Acoustic Reflex Testing + 3 more
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UKAS 27642 Somerset, GB
DIN EN 14175-3 DIN EN 14175-4 DIN EN 12469 ISO 14644-3 BS EN ISO 14644-1:2015 + 3 more
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UKAS 8188 Sunderland, GB
(PCM) based on HSG 248 Analysts’ Guide (HSG 248)
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UKAS 9522 Denny, GB
DIN EN 12350-1 DIN EN 12390-1 DIN EN 12390-2 DIN EN 12390-3 DIN EN 12390-5 + 3 more
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UKAS 0716 Gorton, GB
LENGTH ANCILLARY MEASUREMENTS Plain plug gauges (taper) Plain ring gauges (taper) Micrometers + 3 more
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UKAS 8165 London, GB
Calcium Bence-Jones Protein Microalbumin Ammonia Bilirubin total + 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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