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
3,525 Accredited labs
21 Countries

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UKAS 25073 Bury St. Edmunds, GB
Ethanol Digoxin HbA1c Cortisol Glucose + 3 more
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UKAS 21736 Bury St Edmunds, GB
Cytomegalovirus Fungi Detection of the following: | Special St T cells Mesothelial Cells + 3 more
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UKAS 27138 Bury St Edmunds, GB
MCH MCHC MCV RDW WBC: FLAER, CD24, CD15, CD14, | LP-HAE-I + 3 more
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DAkkS D-PL-21876-01-01 Dortmund, DE
DIN EN 61439-1 DIN EN 61439-5 VDE 0660-600-5 DIN IEC 60060-1 VDE 0432- 1 + 3 more
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DAkkS D-K-21876-01-01 Dortmund, DE
Railway braking — urban guided transport Railway vehicle body structural requirem Quellen Wechselspannung 0,22 mV Temperaturmessgrößen + 3 more
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UKAS 8841 Londonderry, GB
Red Blood Cells Microbiology examination activities for Isolation of microorganisms of Clinical Detection, identification and quantifica Identification testing of clinically sig + 3 more
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UKAS 9684 Altnagelvin Hospital, GB
Ethanol Digoxin HbA1c Cortisol Glucose + 3 more
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UKAS 7911 Londonderry, GB
Helicobacter Cytomegalovirus Fungi Parainfluenza virus type 1 Morphological assessment and interpretat + 3 more
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DAkkS D-K-14054-01-00 Hörstel, DE
Kohlenstoffmonoxid Kohlenstoffdioxid Sauerstoff verwendete Abkürzungen: Kohlenstoffmonoxid *) + 3 more
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UKAS 21065 Cleckheaton, GB
staining based on HSG 248 (PCM) based on HSG 248 Analysts’ Guide (HSG 248)
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ACCREDIA 02334 Monfalcone, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) ASTM E 8 DIN EN 10002-1 DIN EN 10045-1 + 3 more
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UKAS 7567 Newcastle-Under-Lyme, GB
(HSG 248) – 2021 (PCM) based on HSG 248 SOP 12 based on HSG 248 SOP 11 based on HSG 248
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Weynand

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DAkkS D-K-22489-01-01 Steineroth, DE
Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) Optoelektronische nichtselbsttätige
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ACCREDIA 00254 Zola Predosa, IT
DIN EN ISO 17141 ISO 11737-3 ISO 10993-12 ISO 14698-1 BS EN ISO 11737-1:2018 + 3 more
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ACCREDIA 00666 Limena, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO DIN EN ISO 6506-1 DIN EN ISO 6507-1 + 3 more
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ACCREDIA 01400 Bologna, IT
DIN EN 12004-2 ISO 13166 DIN EN ISO 13164-4 DIN EN ISO 13160 DIN EN ISO 18589-2 + 3 more
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ACCREDIA 00676 Bassano del Grappa, IT
DIN EN 14389 DIN EN ISO 17294-2 DIN EN 14039 DIN EN ISO 9377-2 DIN EN ISO 16703 + 3 more
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ACCREDIA 00398 Rimini, IT
DIN EN 933-1 DIN EN 12316-1 DIN EN 13657 DIN EN 14346 DIN EN 1484 + 3 more
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ACCREDIA 00852 Santa Croce sull'Arno, IT
DIN EN 1337-6 DIN EN ISO 10523 DIN EN ISO 3071 DIN EN ISO 17075-1 DIN EN ISO 3377-1 + 3 more
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ACCREDIA 00165 Roncoferraro, IT
ISO 4832 ISO 21527-1 ISO 21527-2 DIN EN ISO 6579-1 DIN EN ISO 7932 + 3 more
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DAkkS D-PL-20465-01-01 Bamberg, DE
VDE 0468-2-1 DIN EN IEC 60068-2-11 VDE 0468-2-11 DIN EN 60068-2-14 VDE 0468-2-14 + 3 more
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UKAS 9855 Whiteley, GB
Audiology | Adult Hearing Services: Audiology | Otoscopy Audiology | History Taking Audiology | Pure Tone Audiometry Audiology | Impression Taking + 3 more
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DAkkS D-PL-17195-01-00 Varel, DE
IEC 61400-21-1 Ed.1 * CEI 0-16, V2 * CEI 0-16, V2 *
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Winkhaus (UK)

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UKAS 1989 Kettering, GB
DIN EN 1191 DIN EN 1629 DIN EN 12046-1 DIN EN 12046-2 EN 1634-3 + 3 more
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UKAS 8835 Upton, GB
Calcium MRSA Helicobacter pylori Hepatitis-B-surface-Antigen VRE + 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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