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
1,323 Accredited labs
15 Countries

Showing 526–550 of 1,323 labs

UKAS 2154 Weston-super-Mare, GB
ISO 178 BS 5350:Part C13 BS 2782 Part 10 Method 1005 BS EN ISO 14125 MIL-STD 810G:2008 Method 501.5 + 3 more
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ENAC LE2505 Granada, ES
UNE 320001 ISO/IEC 18045 ISO/IEC 15408 CEM ISO ISO/IEC 24759 + 2 more
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DAkkS D-K-15129-01-01 Fulda, DE
Temperaturmessgrößen (Härteskalen HV0,01 Widerstandssensor * direktanzeigende > 200 °C Messumformer mit + 3 more
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DAkkS D-K-21494-01-00 Weiden i. d. OPf., DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO elektronische Waagen Innen- und Tiefenmaße Konventioneller + 2 more
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Javer Labs

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UKAS 31736 Nottingham, GB
MIL-STD-810G, Method 508:7 BS 2011:2.1 Ca:1977 (IEC 60068-2-10:2005+A1:2018, MIL-STD-810H, Method 508:8
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DAkkS D-K-18423-01-00 Aschaffenburg, DE
Ebenheitsabweichung verkörperungen z.B. platten nach DIN 876:1984 Geradheitsabweichung ebener Flächen, z.B. + 3 more
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UKAS 4168 Smithfield, GB
DC CURRENT INSPECTION EQUIPMENT AC CURRENT 50 Hz RMS uncertainties may be increased.
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Johs. Boss

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DAkkS D-K-21417-01-01 Albstadt, DE
Außengewinde Flankendurchmesser 3 mm bis 100 mm 0,5 mm bis 6 mm) unsymmetrischem Profil schiedlichen Ausgabeständen gestattet. + 3 more
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UKAS 4515 Amman 11190, JO
MIL-PRF-46103E DIN EN ISO 15106-3 DIN EN ISO 1522 DIN EN ISO 1523 ISO 16935:2007 + 3 more
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DAkkS D-ML-13135-03-01 Würzburg, DE
CD45 Percp+CD16+56+CD3 CD4 CD45 Percp+CD4+CD8 Adalimumab Anti-Adalimumab Antikörper + 3 more
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DAkkS D-K-19781-01-02 Hagen, DE
Temperaturmessgrößen Widerstandsthermometer* Railway braking — urban guided transport Railway vehicle body structural requirem Widerstandssensor * + 3 more
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DAkkS D-K-17233-01-00 Hochdorf-Assenheim, DE
Härteprüfmaschinen nach 100 HBW Brinell- und 226 HBW messeinrichtungen von Härteprüfmaschinen + 3 more
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DAkkS D-K-18972-01-01 Hemmingen, DE
eingängige zylindrische Einstellnormale Lehrdorne Durchmesser 1 mm Prüfstifte + 3 more
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DAkkS D-ML-13391-01-00 Frankfurt am Main, DE
basophile, eosinophile, Granulozyten Differenzialblutbild Erythrozyten Erythrozytenverteilungsbreite (RDW) + 3 more
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DAkkS D-PL-12091-01-01 Forchtenberg, DE
IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-4: 2012 IEC 61000-4-5: 2005 IEC 61000-4-6: 2013 + 3 more
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KROMSCHROEDER

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ENAC LC10.199 Hospitalet de Llobregat, ES
Caudal m3/h 0,010 m3/h  Q  250 m3/h 0, Caudal m3/h 0,16 m3/h  Q  2500 m3/h 0,
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DAkkS D-K-15052-01-01 Pfaffenhofen, DE
Gleichspannung 0 mV Messgeräte > 200 mV > 2 V bis 20 V > 20 V bis 200 V > 200 V bis 1000 V + 3 more
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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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DAkkS D-PL-11068-09-00 Karlsruhe, DE
DIN EN 60034-15 VDE 0530-15 IEC 60034-15 DIN EN 60044-7 VDE 0414-44-7 + 3 more
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DAkkS D-K-11068-01-00 Eggenstein-Leopoldshafen, DE
Luftkerma/-leistung Dosis Dosisleistung
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Kern & Sohn

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DAkkS D-K-19408-01-01 Balingen, DE
nichtselbsttätige − Waagen Festkörpervolumen Wägewert/ Masse oder + 3 more
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Kessler QMP

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DAkkS D-K-15118-01-01 Friedewald, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 Parallelendmaße * Einstelldorne * 1 mm Railway maintenance — track geometry (EN + 3 more
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RvA L605 Delft, NL
IEC 18045 IEC 15408-1
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DAkkS D-K-22363-01-01 Wiesbaden, DE
- Gleichspannung / Messgeräte Spannungsquellen - Gleichstromstärke - Gleichstromwiderstand + 3 more
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DAkkS D-K-15127-01-01 Sindelfingen, DE
Beschleunigung* Beschleunigungsmessketten (Bezugsfrequenzen) (Mittelfrequenzbereich) Beschleunigungsaufnehmer, 0,1 m/s + 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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