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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UKAS 8836 Wirral, GB
T cells | CD3 Macrophages | CD68 Plasma cells | CD138 Prostate specific antigen | PSA Neuroendocrine Cells | Chromogranin A + 3 more
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UKAS 9595 Wirral, GB
Faeces | Campylobacter spp. Faeces | Shigella spp. Routine samples: | Isolation of microorg Faeces | Detection of: EntericBio Real T Faeces | Escherichia coli O157 + 3 more
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DAkkS D-K-20386-01-01 Meppen, DE
1) In den CMC sind die erweiterten Messu DIN EN ISO 3650:1999 > 300 mm Bügelmessschrauben 0 mm Feinzeiger + 3 more
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DAkkS D-PL-11105-01-01 Sinzheim, DE
(p.Ala222Val); dbSNP rs1801133 dbSNP rs1801133 und rs1801131 EN ISO 11925-2 DIN V ENV 807 DIN CEN/TS 15082 + 3 more
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UKAS 8870 Worcester, GB
Formalin fixed paraffin | Mucopolysaccha Frozen tissue | HIS-Cryotomy using CM186 Frozen tissue | Cryostat Fixed tissue, excisional and | Using Sak Fixed tissue, excisional and | RM2245 Se + 3 more
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UKAS 8873 Worcester, GB
Serum | CMV IgG: EMC-VSP-002 App 3 Serum | Rubella IgG: EMC-VSP-001 App 8 Serum | CMV IgM Serum | Hepatitis A IgM CSF | Streptococcus agalactiae + 3 more
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UKAS 8907 Worcester, GB
Fluids: Pleural Fluid, | SOP – Diagnosti Blood peripheral blood for confirmation Blood peripheral blood for confirmation EDTA Whole Detection of Abnormal | Sebia Antibodies | Screening + 3 more
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UKAS 23934 Worthing, GB
Adult Hearing Services | Otoscopy Adult Hearing Services | Profile Adult Hearing Services | Adjustments
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UKAS 7976 Wigan, GB
Audiology | Otoscopy Audiology | History Taking Audiology | Pure Tone Audiometry Audiology | Impression Taking Audiology | Hearing Aid Fitting + 3 more
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DAkkS D-K-15040-01-00 Wuppertal, DE
Charpy impact test (ISO 148-1) verwendete Abkürzungen: − Waagen nichtselbsttätigen elektronischen + 2 more
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DAkkS D-PL-17611-01-01 Wuppertal, DE
DIN EN ISO 10523 (C 5) DIN EN 27888 (C 8) DIN EN ISO 10304-1 (D 20) DIN EN ISO 11885 (E 22) DIN 38402-A 30 + 3 more
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UKAS 8628 Union Walk, GB
Demonstration of: | Operation and Mainte T cells | CD3 Plasma cells | CD138 Amyloid | Congo Red Mast Cells | Toluidine Blue + 3 more
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DAkkS D-K-21902-01-00 Wilsdruff ST Kesselsdorf, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) 1) In den CMC sind die erweiterten Messu − Waagen + 2 more
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DAkkS D-K-21769-01-00 Obertraubling, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) − Waagen Optoelektronische + 1 more
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DAkkS D-K-15073-01-01 Niederkrüchten, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) − Waagen Optoelektronische + 1 more
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DAkkS D-PL-11122-01-00 Kloster Lehnin, DE
wie GR 1404 DIN EN ISO 22826 DIN EN ISO 3679 BS 1363-1 BS 1363-2: 1999 + 3 more
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DAkkS D-K-20615-01-00 Weilheim, DE
Tensile testing of metallic materials (I Vickers hardness test (ISO 6507) Railway braking — urban guided transport direktanzeigende > 200 °C Taupunkttemperatur + 3 more
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UKAS 2437 Udaipur 313 003, IN
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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UKAS 26226 York, GB
Adult Hearing Services | Otoscopy Adult Hearing Services | Adjustments Adult Hearing Services | Tympanometry Adult Hearing Services | Material
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UKAS 9844 Hull, GB
Serum | CMV IgG: EMC-VSP-002 App 3 Serum | Rubella IgG: EMC-VSP-001 App 8 Serum | Specific IgE: Serum | Aspergillus fumigatus Serum | Dog dander + 3 more
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UKAS 9724 York, GB
Serum | Rubella IgG: EMC-VSP-001 App 8 Semen | Post vasectomy: Based on Semen | Fertility testing: Based on WHO Semen | Volume Volume/weight HUMAN BODY FLUIDS | Immunoassay + 3 more
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UKAS 22188 Manchester, GB
22188 Manchester | Email: [email removed Maternal Blood in Streck tubes • Screeni Maternal Blood in Streck tubes • Screeni Maternal Blood in Streck tubes • Screeni Maternal Blood in Streck tubes • Screeni + 2 more
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DAkkS D-K-22359-01-00 Oberursel, DE
Frequenz / Messgeräte 20 HR30W > 150 W Wechselstromstärke 5 mA + 3 more
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DAkkS D-K-23094-01-01 Eisingen, DE
Railway maintenance — track geometry (EN − Längenmessgeräte Prüfstifte Außen-, Innen- und Messuhren + 3 more
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DAkkS D-ML-22115-01-00 Berlin, DE
Hämoglobin Thrombozytenaggregation Erythrozyten Leukozyten Lymphozyten + 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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