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
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IEC 17025
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Erythrocyte Sedimentation Rate Pre analysis Immunochemistry Antibody determination by immuno-assays Immunoflow cytometry + 3 more
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(p.Ala222Val); dbSNP rs1801133 ISO 3795 DIN EN 12879 DIN EN 12880 DIN EN ISO 19458 + 3 more
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IEC 15408-1 IEC 18045
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EN ISO 11925-2 IEC 61000-4-2: 2008 IEC 61000-4-3: 2006 IEC 61000-4-6: 2013 DIN EN 55011: 2018 + 3 more
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RvA L015 Rijswijk Zh, NL
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NEN 3650-1 NEN 3650-2 NEN 3651 NEN 3650-3 NPR 3659
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RvA M117 Hengelo Ov, NL
Massaspectrometrie Pre-analyse Moleculaire diagnostiek d.m.v. PCR Fenotypische karakterisatie Antilichaambepaling d.m.v. immuno- assay + 3 more
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en 2007
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RvA L696 Udenhout, NL
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BELAC 418-TEST Vianen, NL
NBN EN 13508-2 (Codering) NBN B-34-001 BEFDSS-DP-vm (Uitwisselingsformaat) SB 250 Hoofdstuk 7 - Hoofdstuk 14 BEFDSS S -vm (uitwisselingsformaat)
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Monsterverwerking: registratie, opslag Histochemische kleuringen Immuunhistochemische kleuringen Forensisch postmortaal onderzoek
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Massaspectrometrie Immunoflowcytometrie Beenmergonderzoek Bloedafname (extra-muraal) Bloedafname (intra-muraal) + 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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