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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ENAC LE026 Terrassa, ES
DIN EN 1149-2 DIN 53742 DIN EN 12127 ASTM D 2863 c.1772A>G rs11568367 + 3 more
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ENAC LE1300 Madrid, ES
UNE 10523 UNE 27888 UNE 7027 ISO 15923-1 SM 3500 + 3 more
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ENAC LE1555 Madrid, ES
UNE-EN ISO 7932 ISO 15213-1 ISO 21528-2 DIN EN ISO 6579-1 ISO 22964 + 3 more
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ENAC LE1409 Coslada, ES
SM 3111 SM 5220 D SM 2130 B SM 2520 B SM 2510 B + 3 more
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ENAC LE2360 Derio, ES
SM 2540 F SM 2130 B EPA 8270 UNE-EN ISO 8467 UNE-EN ISO 5815-1 + 3 more
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ENAC LE2081 Abrera, ES
SM 4500 H+ UNE EN 27888 SM 2130 B UNE-EN 77059 UNE-EN 1484 + 3 more
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ENAC LE027 Paterna, ES
UNE 137001 UNE 49706 UNE-EN ISO 2234 UNE-EN ISO 12048 UNE-EN ISO 2244 + 3 more
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ENAC LC10.092 Palma, ES
CEM ME-003
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AIRGRUP

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ENAC LC10.235 Rinconada, ES
CEM ME-003 CEM DI-008 UNE-EN ISO 6789-2 CEM DI-020 CEM DI-005 + 3 more
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ENAC LE2541 Erandio, ES
ISO 10469:2006)
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ENAC LE808 Tres Cantos, ES
IEC 60068-2-1 IEC 60068-2-2 UNE-EN 60068-2-14 UNE-EN 60068-2-78 IEC 60068-2-6 + 3 more
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ENAC LC10.017 Leganés, ES
CEM DI-002 EURAMET CG-2 CEM DI-014 CEM DI-006 CEM DI-016 + 3 more
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ENAC LE201 Sada, ES
ISO 6059 ASTM D 1209 UNE-EN ISO 8467 SM 4500-NH D 3 UNE 77048 + 3 more
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ENAC LE2307 Puertollano, ES
ISO/IEC 25010 ISO/IEC 25040 ISO/IEC 25012 ISO/IEC 5259-2
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ENAC LC10.098 San Ginés, ES
EURAMET cg-18 CEM Ed CEM GUIA CEM TH-001 CEM TH-007 + 3 more
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ENAC LE1105 Valencia, ES
DIN EN 13864 DIN EN 14808 DIN EN 12235 ISO 2549 ISO 4919 + 3 more
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ENAC LE016 Ibi, ES
UNE-EN 71-1 ISO 8124-1 ISO 8124-2 ASTM F963-17 (NM_001718: c.1-c.500) + 3 more
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ENAC LE025 Alcoi, ES
DIN EN ISO 11612 DIN EN ISO 3175-2 ISO 17493 DIN EN ISO 17227 DIN EN ISO 6330 + 3 more
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ENAC LE004 Castellón de la Plana, ES
UNE-EN ISO 10545-2 UNE-EN ISO 10545-3 ASTM C373 UNE-EN ISO 10545-4 UNE-EN ISO 10545-5 + 3 more
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ENAC LE146 Elda, ES
DIN EN ISO 20344 DIN EN 13634 BS EN ISO 20344::2011 Clause 5.1 DIN EN ISO 22568-1 ISO 22568-1: 2019 Clause 5.2.1 + 3 more
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ENAC LE2422 Toledo, ES
UNE-EN 772-11 UNE 136029 DIN 4772:1979 DIN EN 16510-2-4 DIN EN 17539 + 3 more
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AVL IBERICA

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ENAC LC10.240 Valladolid, ES
CEM ME-003
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ENAC LE1004 Logroño, ES
IEC 61400-11:2012/ AMD:2018 IEC 61400-12-2 IEC 61400-50-2 IEC 61400-12-1 IEC 61400-12-3 + 3 more
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BIOTECNAL

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ENAC LE582 Sant Quirze del Valles, ES
UNE-EN ISO 6579-1 UNE-EN ISO 6222 UNE-EN 26777 UNE-EN ISO 7027-1 en 31-7-79 (BOE 29-08-79) + 3 more
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ENAC LE378 Sant Cugat del Vallès, ES
UNE-EN 13284-2 UNE-EN 15259 UNE-EN 16911-2 UNE-EN 13284-1 UNE EN 1911 + 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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