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
1,560 Accredited labs
17 Countries

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DAkkS D-ML-13144-07-01 Jena, DE
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DAkkS D-ML-13195-02-00 Leipzig, DE
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DAkkS D-ML-13195-06-00 Leipzig, DE
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DAkkS D-ML-13264-01-00 Magdeburg, DE
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DAkkS D-ML-13264-04-00 Magdeburg, DE
Mukoviszidose Hauptmutationen (N1303K, F508del, R553*, 2143delT, 2184delA, 3272-26A>G, G85E, 62 Alzheimer'sche Erkrankung: APOE Allel), APP (Exon 16 und 17) + 3 more
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DAkkS D-ML-13264-03-01 Magdeburg, DE
HbA1c CA 125 AMH Albumin Aldosteron + 3 more
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DAkkS D-ML-13264-02-00 Magdeburg, DE
Anti-Staphylolysin des Staphylococcus aureus Salmonella spp. Treponema pallidum Yersinia spp. + 3 more
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DAkkS D-ML-13200-01-00 Mannheim, DE
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DAkkS D-ML-13200-02-00 Mannheim, DE
Aspergillus fumigatus AK Candida albicans-AK Antikörper gegen Cardiolipin Factor) Cryptococcus neoformans + 3 more
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DAkkS D-ML-13021-03-00 Münster, DE
ACTA2 ACTC1 ACTN2 ANK2 CACNA1C + 3 more
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DAkkS D-ML-13021-07-01 Münster, DE
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DAkkS D-ML-13021-08-00 Münster, DE
anti-CMV IgG anti-CMV IgM CMV IgG Avidität Denguevirus Antigen Denguevirus IgG Antikörper + 3 more
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DAkkS D-ML-13021-04-00 Münster, DE
ZNS spez. Tau Protein ZNS spez. Beta-Amyloid Zellzahl- und Zelldifferenzierung Beschaffenheit des Liquors Glukose + 3 more
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DAkkS D-ML-13021-11-00 Münster, DE
Cyclosporin A Everolimus Sirolimus Cyclosporin A, Everolimus, Sirolimus, Ta alpha-Linolensäure + 3 more
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DAkkS D-ML-13021-10-01 Münster, DE
Treponema pallidum (RPR) Clostridioides difficile (Glutamatdehydrogenase 1 (Antigen) Streptococcus pneumoniae + 3 more
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DAkkS D-ML-13021-09-00 Münster, DE
anti-CMV IgG anti-CMV IgM CMV IgG Avidität Denguevirus Antigen Denguevirus IgG Antikörper + 3 more
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Azoospermie, Oligozoospermie (AZF) angeborener Chromosomensatz erworbener Chromosomensatz
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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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