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
🇧🇪 NBN EN 14198 🇩🇪 DIN EN 14198 🇬🇧 BS EN 14198 🇫🇷 NF EN 14198 🇮🇹 UNI EN 14198 🇪🇸 UNE EN 14198 🇳🇱 NEN EN 14198
2,795 Accredited labs
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DAkkS D-ML-13102-06-01 Frankfurt am Main, DE
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DAkkS D-ML-13102-02-00 Frankfurt am Main, DE
Kohlenstoffdioxid CO2 tration von Harnsäure tration von Harnstoff Creatinin Digitoxin + 3 more
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DAkkS D-ML-13102-06-00 Frankfurt am Main, DE
manuelles Differentialblutbild Familiärer Brust- und Eierstockkrebs Zellzahlbestimmung (BRCA1) Zell-Differenzierung von + 3 more
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DAkkS D-ML-13134-02-01 Freiburg, DE
homogene metall-Thermoelement - Oberschalenwaagen Anzeigeelement ASCA IgG + 3 more
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DAkkS D-ML-13134-05-00 Freiburg, DE
Thrombozytäre Antikörper HLA-Antikörpertestung (Detektion) HLA-Antikörpertestung komplementbindender Antikörper (Anti-HPA) + 3 more
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DAkkS D-ML-13134-06-01 Freiburg, DE
Juvenile myelomonozytäre Diamond-Blackfan-Anämie ; DBA Dyskeratosis congenita; DC Panel GATA2 Defizienz, SAMD9/L Refraktäre Zytopenie; SAMD9 Panel + 3 more
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DAkkS D-ML-13134-07-00 Freiburg, DE
erworbener Chromosomensatz Pappenheim-Färbung Peroxidase-Reaktion Resterkrankung bei Haarzellleukämie Geschlechtschromosomen + 3 more
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DAkkS D-ML-13134-12-00 Freiburg, DE
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DAkkS D-ML-13304-04-01 Marburg, DE
% (Hz) 0 | ± 1 (C3H8) 0,000016 Kapseltyp B, Neisseria meningitidis aerob wachsende Bakterien Bakterien, Sprosspilze + 3 more
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DAkkS D-ML-13304-03-00 Gießen, DE
(ein- oder mehrgängige Ethanol Absolutdruck tration von Harnsäure tration von Harnstoff + 3 more
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DAkkS D-ML-13304-07-01 Gießen, DE
Rhabdoid-Prädispositions-Syndrom Multiple Endokrine Neoplasie BRCA1/BRCA2: ID001 Medulläres Schilddrüsenkarzinom DPYD-Genotypisierung vor 5 FU + 3 more
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DAkkS D-ML-13304-01-00 Gießen, DE
Hämoglobin 500 hPa 10 hPa Thrombozytenaggregation Erythrozyten + 3 more
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DAkkS D-ML-13304-09-01 Marburg, DE
(ein- oder mehrgängige Ethanol tration von Harnsäure tration von Harnstoff Digitoxin + 3 more
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DAkkS D-ML-13304-08-01 Marburg, DE
Anti-HAV IgM Anti-HBe Anti-HCV SARS-CoV-2 Astrovirus + 3 more
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DAkkS D-ML-13304-10-00 Marburg, DE
homogene - Oberschalenwaagen OMIM*176872, MET OMIM*600993, STK11 TGFBR2 + 3 more
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DAkkS D-ML-13217-01-00 Halle (Saale), DE
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DAkkS D-ML-13217-04-00 Halle (Saale), DE
DPYD (SNP-Analyse) JAK2 Kodon 617 Mutationsanalyse B-Zellklonalitätsanalyse (IGH, IGL, IGK) Myeloid-NGS Panel bei MDS/MPN und 2, GNAS, HRAS, IKZF1, JAK3, KDM6A, K + 3 more
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DAkkS D-ML-13278-01-01 Hamburg, DE
Thyreoidea stimulierendes (TSH) Immunreaktives Trypsin Uridyltransferase (GALT) Gesamtgalaktose + 3 more
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DAkkS D-ML-13278-09-00 Hamburg, DE
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DAkkS D-ML-13278-03-00 Hamburg, DE
Immunglobulin G (IgG) Immunglobulin M (IgM) Cryptococcus neoformans aerob wachsende Bakterien Bakterien, Sprosspilze + 3 more
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DAkkS D-ML-13278-07-00 Hamburg, DE
tration von Harnsäure tration von Harnstoff pH - Wert Schwefeldioxid SO 2 Digitoxin + 3 more
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DAkkS D-ML-13278-02-00 Hamburg, DE
AMA M2-AK CCP-AK Fibrillarin AK GBM-AK MPO-AK + 3 more
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DAkkS D-ML-13200-02-01 Mannheim, DE
Immunglobulin M (IgM) Cryptococcus neoformans Bakterien, Sprosspilze Bakterien, Pilze Dermatophyten + 3 more
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DAkkS D-ML-13200-03-01 Mannheim, DE
OMIM*164790, PIK3CA EGFR exon 19 deletions, EGFR Therapie, SNV ESR1 Punktmutation in Codons 380, 463, 535, 5 + 3 more
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DAkkS D-ML-13060-06-00 Heidelberg, DE
Gesamtgalaktose Aminosäuren Acylcarnitine Homocystein Anti-HBs + 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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