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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Sozialstiftung Bamberg Institut für Labordiagnostik, Mikrobiologie und Transfusionsmedizin

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DAkkS D-ML-13177-02-00 Bamberg, DE
Verschlußzeit Kollagen/ADP Kollagen/Epinephrin Basophile Granulozyten Eosinophile Granulozyten Erythrozyten + 3 more
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Sozialstiftung Bamberg Institut für Labordiagnostik Mikrobiologie und Transfusionsmedizin

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DAkkS D-ML-13180-01-00 Bamberg, DE
Verschlußzeit Kollagen/ADP Kollagen/Epinephrin Basophile Granulozyten Eosinophile Granulozyten Erythrozyten + 3 more
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Spectra Analysis Services

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UKAS 2621 Basildon, GB
QOP01 based on HSG 248 (HSG 248) – 2021 (PCM) based on HSG 248 (HSG 264, 2012) Appendix 5 of HSG 227 (2004))
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Spera Consulting

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UKAS 10772 Birmingham, GB
(HSG 264, 2012)
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Sperrin Technical Laboratories

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UKAS 10817 Moneymore, GB
AM01 based on BS EN ISO 4833-1: AM03 based on BS EN ISO 11290- AM05 based on BS ISO 21528-2: AM08 based on BS EN ISO 15213-2:2023 by AM12 based on BS EN + 3 more
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Springfields Fuels

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UKAS 1170 Salwick, GB
LMM2149, ASTM E112-13 by ISO 6507-1 LMM2207, ASTM E112-13 by LMM1862, ASTM E112-13 for to BS EN ISO 6507-1:2018 + 3 more
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St Helena Public Health Laboratory

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UKAS 4564 South Atlantic Ocean STHL1ZZ, SH
FM003 based on ISO 6888- FM004 based on ISO 16649-2:2001 FM006 based on ISO 6579-1:2017+Amd 1:202 FM009 based on ISO 11290-1:2017 2) WM005 based on ISO 9308-2:2012 using + 1 more
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Staatsbetrieb für Mess- und Eichwesen Eichamt Leipzig Kalibrierlaboratorium

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DAkkS D-K-15137-01-00 Leipzig, DE
Kraft Vibration measuring instruments — requir Sound power — survey method (ISO 3746) 1 kN Railway brake — automatic variable load + 3 more
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Stadt Passau Klinikum Passau Institut für Labor- und Transfusionsmedizin

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DAkkS D-ML-22372-01-00 Passau, DE
Großes Blutbild Kleines Blutbild Erythrozyten Hämoglobin Hämatokrit + 3 more
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Steinbeis GmbH & Co. KG für Technologietransfer TQI Metricon Kalibrierservice

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DAkkS D-K-11200-01-00 Gosheim, DE
Lehrdorne Durchmesser 1 mm Lehrringe Prüfstifte Messschieber für 0 mm + 3 more
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Stiebel Eltron GmbH & Co. KG Kalibrierlabor Elektrolabore

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DAkkS D-K-21191-01-01 Holzminden, DE
- Gleichspannung / Messgeräte 1 µV > 330 mV 3,3 V + 3 more
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Stiftung für Pathobiochemie und Molekulare Diagnostik Referenzinstitut für Bioanalytik

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DAkkS D-K-15117-02-01 Hannover, DE
Glucose Plasma, Serum, Plasma 0,5 mmol/L Bilirubin 5 µmol/L Hämoglobin 1,24 mmol/L + 3 more
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Studenroth Präzisionstechnik

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DAkkS D-K-15146-01-01 Schöneck-Kilianstädten, DE
− Parallelendmaße − Durchmesser − Längenmessmittel Railway brake — magnetic track brakes (U − Längenmessgeräte + 3 more
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Städtisches Klinikum Dessau Institut für Klinische Chemie und Laboratoriumsdiagnostik

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DAkkS D-ML-17443-01-00 Dessau-Roßlau, DE
WBC (Leukozyten) RBC (Erythrocyten) HGB (Hb) HCT (Hk) PLT (Thrombozyten) + 3 more
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Suchy Messtechnik

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DAkkS D-K-23061-01-01 Lichtenau, DE
Druck 50 mbar Absolutdruck Pabs > 1,3 bar > 2,5 bar > 0,6 bar + 3 more
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Surrey County Council

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UKAS 0731 Guildford, GB
DIN EN 933-11 DIN EN 1097-6 DIN EN 1097-1 DIN EN 1097-2 DIN EN 933-3 + 3 more
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Swindon Asbestos Surveying

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UKAS 4608 Swindon, GB
(HSG 264, 2012)
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Sychem

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UKAS 25291 Southampton, GB
parameters and ranges)
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SysKal

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DAkkS D-K-21604-01-00 Steinheim an der Murr, DE
Hexagon Metrology Raumdiagonale von GmbH, Wetzlar, D ≤ 1500 mm Polyworks, Software von InnovMetric, Lindau, D PowerINSPECT, Software + 3 more
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Systems Engineering Kalibrierlaboratorium

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DAkkS D-K-19425-01-01 Stolberg, DE
- Gleichspannung > 0,1 V > 10 V > 100 V - Gleichstromstärke + 3 more
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Sächsisches Institut für die Druckindustrie GmbH -Institut des Vereins POLYGRAPH Leipzig e. V. - Prüflabor

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DAkkS D-PL-11119-01-00 Leipzig, DE
ISO 5-3 ISO 12647-1 ISO 13655
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Sächsisches Textilforschungsinstitut e. V. Prüfstelle

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DAkkS D-PL-11239-01-05 Chemnitz, DE
ISO 3074 DIN EN ISO 1833-4 DIN EN ISO 1833-5 DIN EN ISO 1833-6 DIN EN ISO 1833-7 + 3 more
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TAK CERT

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DAkkS D-K-20800-01-01 Bonn, DE
− Scheinwerfer-Einstell-Prüfsystem − Abgasmessgeräte für Fremdzündungsmotor − Abgasmessgeräte für Kompressionszündun Railway brake — magnetic track brakes (U nur Vor-Ort-Kalibrierungen + 3 more
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TC Laser

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DAkkS D-PL-22493-01-00 Eppertshausen, DE
DIN EN 50689 VDE 0837-689 DIN 56912 DIN EN 60825-1 VDE 0837-1 + 3 more
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TECYGES

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ENAC LC10.232 Zaragoza, ES
CEM Procedimiento
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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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