UIC 541-04

Automatic Variable Load Brake Testing

This test defines specifications for automatic variable load braking systems that adjust braking force proportionally to the vehicle's loading condition, optimizing stopping distance and wheel adhesion. The standard covers the design, functionality, and performance requirements of automatic load-sensing brake control equipment fitted to freight and passenger trains. Testing verifies that braking force automatically adjusts across the range from empty to fully loaded conditions, enhancing safety and reducing wheel slide risk. Accreditation for this test is critical for manufacturers of brake control systems and railway operators ensuring consistent, safe braking performance regardless of train loading.

What it measures

  • Load-proportional braking force adjustment mechanisms
  • Response characteristics across loading range
  • Wheel adhesion optimization and anti-lock performance
  • System reliability and fail-safe functionality
  • Pressure modulation and control accuracy
🇩🇪 DIN EN 14198 🇬🇧 BS EN 14198 🇫🇷 NF EN 14198 🇮🇹 UNI EN 14198 🇪🇸 UNE EN 14198 🇳🇱 NEN EN 14198
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K. Meyer R.M.S.

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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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KALITEO

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COFRAC 1-5835 Gasny, FR
DIN EN 27888 NF X 31-615 (Uniquement DIN EN ISO 10523
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KB Prüftechnik

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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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KCH Kalibriercentrum Hannover

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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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KLG Krankenhaus-Labor-Gesellschaft

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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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KRIWAN Testzentrum

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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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Kalibra International

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RvA K088 Delft, NL
HCS LF 6 0 HCS LF 2 0 HCS LF 6 2 HCS LF 1 0 HCS LF 3 0 + 3 more
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Kalibrierservice Brandl

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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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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
DIN EN 60034-15 VDE 0530-15 IEC 60034-15 DIN EN 60044-7 VDE 0414-44-7 + 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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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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Keysight Technologies Netherlands Riscure

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RvA L605 Delft, NL
IEC 18045 IEC 15408-1
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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 / Messgeräte Spannungsquellen - Gleichstromstärke - Gleichstromwiderstand + 3 more
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Kistler Instrumente

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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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Kiwa Assurance

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RvA L447 Rijswijk Zh, NL
EN ISO 11925-2 DIN EN ISO 13162 DIN EN 14509 DIN EN ISO 13163 DIN EN 1604 + 3 more
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Kiwa

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DAkkS D-PL-11217-01-02 Berlin, DE
DIN EN ISO 7438 DIN 50100 ISO 9352 DIN ISO 48-4 DIN EN ISO 1675 + 3 more
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Kiwa

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UKAS 8896 Rasssau, GB
DIN EN 13079 BS 1212-4:1991 Clause 4, 13, 14 DIN EN 14622 BS 1212-3:1990 Clause 4 DIN EN 14623 + 3 more
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Kiwa

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UKAS 2360 Brentwood, GB
DIN EN 55011: 2018 IEC/CISPR 22 DIN EN 55016-2-1 IEC 61326-2-2: 2012 IEC 61000-6-1 + 3 more
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Kiwa

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UKAS 0692 Cheltenham, GB
DIN EN 16510-2-3 DIN EN 16510-2-1 DIN EN 13229 DIN EN 16510-1 DIN EN 13240 + 3 more
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Kiwa

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UKAS 2667 Blackwood, GB
DIN EN 55011: 2018 AS/NZS CISPR 11:2004 EN 55011 2016 + A1 2017 + A11 2020 IEC/CISPR 14-1 DIN EN 55013 + 3 more
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Kiwa Nederland

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RvA L015 Rijswijk Zh, NL
ISO 2781 ISO 1133-1 ISO 6259-1:2015 ISO 6259-3 ISO 6259-2:1997 + 3 more
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Kiwa Primara

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DAkkS D-PL-12089-01-01 Kaufbeuren, DE
BS 1363 DIN VDE 0620-2 DIN VDE 0620-2-1 ISO 12100: 2010 DIN EN 50124-1 + 3 more
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Klasmeier Kalibrier- und Messtechnik GmbH ISOTECH

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DAkkS D-K-15224-01-00 Fulda, DE
Taupunkttemperatur fixpunktzellen Normal- −196 °C bis −189,3442 °C thermometer (SPRT) Widerstandsnormal + 3 more
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Industries

Railway rolling stock manufacturers Brake control system suppliers Freight train operators Passenger rail services Railway certification and safety authorities

Related Standards

  • UIC 541-01 Railway brakes — Braking power
  • UIC 541-05 Railway brakes — Anti-slide device
  • EN 14198 Railway applications — Wheelsets and bogies — Safety requirements for thermal management

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