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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DIN EN 13260 DIN EN 13261 DIN EN 13262 Railway end stop systems (EN 14752) Railway vehicle body structural requirem + 3 more
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OM H-3 based on ISO 9698:2019 ISO 13164-4 SM 3111 UNE-EN ISO 13160 ISO 10704 + 3 more
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UNE-EN ISO 5667-19 UNE-EN ISO 16665 UNE-EN 19493
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UNE-EN 136 UNE-EN 148-1 UNE-EN 140 UNE-EN 149 UNE-EN 13274-7 + 3 more
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DAkkS D-K-17734-01-01 Werne, DE
Taupunkttemperatur Railway brake handbooks (UIC 547) (SPRT) –40 °C > –20 °C + 3 more
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COFRAC 1-1209 Garons, FR
DIN EN 1988-1 DIN EN ISO 17294-2 NF T 90-412 DIN EN ISO 7899-1 DIN EN ISO 10304-1 + 3 more
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COFRAC 1-5697 Aix-En-Provence, FR
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DIN EN 12390-6 DIN EN 62196-1: 2015 DIN EN 12390-3 NF P 98-532 NF P 98-533 + 3 more
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ACCREDIA 00719 Longarone, IT
ISO 17234-1 ISO 4045 EPA 8270 ISO 17234-2 DIN EN ISO 17075-1 + 3 more
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UKAS 2338 Burton-upon-Trent, GB
DIN EN 13284-1 BS ISO 9096:2017 requirements of BS EN 15259:2007 Standard and BS EN 15259:2007 DIN EN ISO 16911-1 + 3 more
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DAkkS D-K-19566-01-00 Hilden, DE
Druck * > –0,12 bar bis negativer und positiver Überdruck p e > –0,01 bar bis > 0,03 bar bis + 3 more
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DAkkS D-PL-12049-01-02 Wismar, DE
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ACCREDIA 00228 Monopoli, IT
DIN EN 17892 NEN-EN 16618 (incl EN 62366-1: 2015 +A1: BS EN 15662 ISO 12966-2 + 3 more
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ACCREDIA 00618 Vicenza, IT
DIN EN 1186-3 IEC 62321-3-1 DIN EN 13727 EPA 6020 DIN EN 12457-2 + 3 more
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ENAC LE2532 Viladecavalls, ES
UNE-EN 61000-4-2 UNE EN 61000-4-5 UNE-EN 55016-2-1 UNE-EN 61000-4-11 UNE-EN 61000-4-8 + 3 more
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ENAC LE2384 Leganés, ES
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COFRAC 1-0064 Saint-Marcel, FR
DIN EN 1254-2 DIN EN 1254-3 DIN EN 1254-5 DIN EN 12101-10 BS EN 50291-1:2018 + 3 more
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DAkkS D-ML-21581-01-00 Berlin, DE
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COBRA INSTALACIONES Y SERVICIOS

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CEM EL-020 EURAMET cg-17 CEM EL CEM ME-004 EURAMET cg-11 + 3 more
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COMPAÑÍA ESPAÑOLA DE TABACO EN RAMA, S.A. (CETARSA), S.M.E.

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UNE 118019 UNE 118012 ISO 22980 UNE 118020 UNE 118021-2
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COMPRION GmbH Prüf- und Kalibrierlabor

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CONSORCI DE MEDI AMBIENT I SALUT PÚBLICA DE LA GARROTXA (SIGMA) LABORATORI POLIVALENT DE LA GARROTXA

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SM 3111 B SM 3500-K B SM 3500-Na B SM 2330 B SM 3113 B UNE-EN ISO 8467 + 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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