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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Kalibrierservice Brandl

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DAkkS D-K-15052-01-01 Pfaffenhofen, DE
Railway braking — urban guided transport Railway vehicle body structural requirem - Gleichstromwiderstand Temperaturmessgrößen - Temperatur-Blockkalibratoren + 3 more
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Kapraun Prüfdienst

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DAkkS D-K-20795-01-01 Waldaschaff, DE
Railway brake — magnetic track brakes (U − Ebenheit − Geradheit − Winkelnormale auch als Vor-Ort-Kalibrierung + 3 more
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Karlsruher Institut für Technologie Institut für Elektroenergiesysteme und Hochspannungstechnik (IEH)

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DAkkS D-PL-11068-09-00 Karlsruhe, DE
VDE 0468-2-1 DIN EN IEC 60068-2-11 DIN EN 60068-2-14 VDE 0468-2-14 DIN EN IEC 60068-2-38 + 3 more
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Karlsruher Institut für Technologie Materialprüfungs- und Forschungsanstalt, MPA Karlsruhe

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DAkkS D-PL-11068-08-00 Karlsruhe, DE
P1433, P14-3-3 DIN EN 62196-1: 2015 DIN EN ISO 14891 DIN EN 12390-2 DIN EN 12390-3 + 3 more
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Karlsruher Institut für Technologie Sicherheit und Umwelt (SUM) Kalibrierlabor

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DAkkS D-K-11068-01-00 Eggenstein-Leopoldshafen, DE
Luftkerma/-leistung Dosis Dosisleistung
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Kenya Bureau of Standards Metrology Laboratories

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DAkkS D-K-15101-01-00 Nairobi, DE
> 5 kHz > 10 mg > 20 mg > 50 mg > 100 mg + 3 more
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Kern & Sohn

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DAkkS D-K-19408-01-01 Balingen, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Railway bogies — wheelsets and bogies st > 100 G relativen Feuchte + 3 more
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Kessler QMP

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DAkkS D-K-15118-01-01 Friedewald, DE
Salt spray / neutral salt fog test (ISO Environmental noise — determination of s Railway maintenance — track geometry (EN - Gleichspannung - Gleichstromstärke + 3 more
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Kettering General Hospital NHS Foundation Trust

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UKAS 8118 Kettering, GB
Ethanol HbA1c Glucose Gentamicin Vancomycin + 3 more
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Keysight Technologies Deutschland GmbH Hardware Test Center Europe

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DAkkS D-PL-19882-01-02 Böblingen, DE
VDE 0468-2-1 DIN EN 60068-2-14 VDE 0468-2-14 VDE 0468-2-27 DIN EN 60068-2-30 + 3 more
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Keysight Technologies Netherlands Riscure

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RvA L605 Delft, NL
IEC 15408-1 IEC 18045
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KfH KURATORIUM FÜR DIALYSE UND NIERENTRANSPLANTATION

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DAkkS D-K-22363-01-02 Wiesbaden, DE
negativer und positiver Druck
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KfH KURATORIUM FÜR DIALYSE UND NIERENTRANSPLANTATION Zentrale Servicestelle - Kalibrierlabor

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DAkkS D-K-22363-01-01 Wiesbaden, DE
- Gleichspannung - Gleichstromstärke - Gleichstromwiderstand - Wechselspannung - Wechselstromstärke + 3 more
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Kingston and Richmond NHS Foundation Trust

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UKAS 8271 Kingston, GB
Mycobacterium species Nuclear protein in lung and thyroid | Th Adenocarcinoma | CYTOKERATIN 19 Human tissue samples/ | Detection of Her FFPE | Differential diagnosis hepatoblas + 3 more
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Kingston and Richmond NHS Foundation Trust

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UKAS 8132 Kingston upon Thames, GB
Mycobacterium species Nuclear protein in lung and thyroid | Th Adenocarcinoma | CYTOKERATIN 19 Human tissue samples/ | Detection of Her FFPE | Differential diagnosis hepatoblas + 3 more
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King’s College Hospital NHS Foundation Trust

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UKAS 27087 Denmark Hill, GB
Physiology | Spirometer Physiology | • Spirometry Physiology | • Lung volumes Physiology | • Sniff Inspiratory Pressur Physiology | Radiometer ABL90 + 3 more
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Kistler Instrumente

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DAkkS D-K-15127-01-01 Sindelfingen, DE
Railway — traction effort and braking fo Prüfkraftmesseinrichtung - Gleichspannung - Gleichstromstärke - Gleichstromwiderstand + 3 more
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Kistler Remscheid

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DAkkS D-K-17572-01-02 Remscheid, DE
Vickers hardness test (ISO 6507) Railway — traction effort and braking fo Längenmessgeräte * Drehmoment- 0,2 N·m − Drehmoment + 3 more
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Kistner Metrologie Service

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DAkkS D-K-15181-01-01 Boxberg-Unterschüpf, DE
Salt spray / neutral salt fog test (ISO Sound intensity — scanning method part 2 Environmental noise — determination of s Härte (WPM) * / Messgeräte + 3 more
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Kiwa Assurance

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RvA L447 Rijswijk Zh, NL
EN ISO 11925-2 IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-6: 2013 DIN EN 55011: 2018 + 3 more
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Kiwa CERMET Italia S.p.A. con socio unico

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ACCREDIA 00001 Cadriano di Granarolo Emilia, IT
Tensile testing of metallic materials (I Salt spray / neutral salt fog test (ISO - PiM rs6647, PiZ rs28929474, rs17580 DIN EN ISO 18203 DIN EN ISO 6506-1 + 3 more
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Kiwa CERMET Italia S.p.A. con socio unico

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ACCREDIA 00233 Padova, IT
ANSI C63.4a:2017 ANSI C63.4:2014 ANSI C63.10:2013 RSS-GEN Issue 5 RSS-102 Issue 6 + 3 more
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Kiwa

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DAkkS D-PL-11217-01-02 Berlin, DE
229600 (A150P u. A175 DIN EN ISO 7438 DIN 51451 DIN EN 50178: 1998 ISO 21527-1 + 3 more
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Kiwa

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DAkkS D-PL-11217-03-03 Rostock, DE
229600 (A150P u. A175 DIN EN ISO 7438 DIN 51451 DIN EN 50178: 1998 ISO 21527-1 + 3 more
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Kiwa

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UKAS 8896 Rasssau, GB
DIN EN ISO 80601-2-87 DIN EN 10200 DIN EN 1159-3 DIN ISO 10381-7 DIN EN 12288 + 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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