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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DAkkS D-K-20800-01-01 Bonn, DE
− Scheinwerfer-Einstell-Prüfsystem − Abgasmessgeräte für Fremdzündungsmotor − Abgasmessgeräte für Kompressionszündun Railway brake — magnetic track brakes (U nur Vor-Ort-Kalibrierungen + 3 more
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TARKETT France

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COFRAC 1-0576 Sedan, FR
DIN EN ISO 717-2 DIN EN ISO 10140-3 DIN EN 1081 DIN EN ISO 105-B02 DIN EN ISO 9239-1 + 3 more
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TC Laser

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DAkkS D-PL-22493-01-00 Eppertshausen, DE
DIN EN 50689 VDE 0837-689 DIN 56912 DIN EN 60825-1 VDE 0837-1 + 3 more
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TECNATOM, S.A. (Unipersonal)

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ENAC LE1474 San Sebastián de los Reyes, ES
UNE 73109 IEC 60780 (1998) UNE 73109 (2001) ISO 28218 ISO 27048
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TECNOPROCESOS CONTROL Y SISTEMAS

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ENAC LE2183 Sant Cugat del Vallès, ES
UNE-EN ISO 14644-3 UNE-EN ISO 14644-1 (sin realizar toma se ISO 14644-3 UNE-EN 12469
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TECYGES

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ENAC LC10.232 Zaragoza, ES
CEM Procedimiento
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TEMEKA Testen, Messen und Kalibrieren von Prüf- und Meßmitteln

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DAkkS D-K-15024-01-01 Heusweiler, DE
- Gleichspannung / Messgeräte 0,1 mV > 220 mV > 2,2 V + 3 more
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TERANA PUY-DE-DOME

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COFRAC 1-6120 Lempdes, FR
NF T 90-412 NF U47-101 DIN EN ISO 7899-1 DIN ISO 16649-2 DIN EN ISO 6888-2 + 3 more
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TES Time Elektronik Struck

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DAkkS D-K-15097-01-01 Pinneberg, DE
Elektrische Messgrößen Gleichstrom- und Niederfrequenzmessgröße Railway brake — magnetic track brakes (U − Gleichspannung − Gleichstromstärke + 3 more
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TEST & INNOVATION LAB SRL a socio unico

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ACCREDIA 01866 Prato, IT
ISO 17704 BS EN ISO 14362-1 ISO 1841-2 BS EN ISO 14362-3 ISO 16181-1 + 3 more
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THOR ESPECIALIDADES

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ENAC LE2333 Castellgalí, ES
DIN EN 16615 DIN EN 17658 DIN EN 13697 IEC 60127-6 DIN EN 13727 + 3 more
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TIRA

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DAkkS D-K-17684-01-00 Schalkau, DE
Kraft (WPM) Kraftmesseinrichtungen von Werkstoffprüfmaschinen Acoustics — tonality assessment (DIN 456 Länge (WPM) + 3 more
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TLR International Laboratories

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RvA L059 Rotterdam, NL
DIN EN ISO 3596 DIN EN ISO 14780 BS ISO 18283:2022 DIN EN ISO 10893-6 DIN EN 61442 + 3 more
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TORUS Measurement Systems

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UKAS 0773 Telford, GB
LENGTH
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TRAC Associates

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UKAS 8644 Bury, GB
(HSG 264, 2012) HSG 264 (2012) and Appx. 3 of HSG 227 (2004))
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TRESCAL ESPAÑA DE METROLOGIA S.L. (Unipersonal)

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ENAC LC10.078 Illescas, ES
UNE-EN ISO 868 ASTM D 2240 ISO 48-9 UNE 7050-3 UNE-EN ISO 10360-2 + 3 more
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TTR INSTITUTE SRL

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ACCREDIA 00627 Busto Arsizio, IT
ASTM E 415 21 DIN EN 15266 ASTM D 1329 UNI EN ISO 22391 DIN EN ISO 10140-1 + 3 more
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TUV ITALIA SrL

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ACCREDIA 00173 Brugine, IT
ETSI EN 301 489-1: V2.2.3 IEC 62109-1 DIN EN 50178: 1998 IEC 61000-4-16: 2015 IEC 62109-2 + 3 more
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TUV Rheinland Italia

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ACCREDIA 00321 Pogliano Milanese, IT
IEC 60335-2-51 DIN EN 60068-2-30 IEC 61000-6-1 IEC 60335-2-54: 2008 DIN EN 50564 + 3 more
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TVS Analysis

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UKAS 2684 Birchwood, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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TYSR Analysis

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UKAS 31733 Chorley, GB
(HSG 248) – 2021 QSOP 01 based on HSG 248
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Technische Universität Darmstadt Staatliche Materialprüfungsanstalt Mess- und Kalibriertechnik

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DAkkS D-K-11048-01-02 Darmstadt, DE
Railway braking — thermal analysis (EN 1 Railway — traction effort and braking fo Railway vehicle dynamics — on-track test Railway brake disc acoustic emissions (E Railway wheel squeal and curve noise (EN + 3 more
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Technische Universität München Institut für Medizinische Mikrobiologie, Immunologie und Hygiene

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DAkkS D-ML-14063-01-00 München, DE
Staphylokokken Treponema pallidum (Cardiolipin Antikörper) Legionella spp. Salmonellen, Shigellen, Yersinia + 3 more
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Technische Universität München Materialprüfungsamt für das Bauwesen

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DAkkS D-PL-14063-03-00 München, DE
ISO 15835-2 DIN EN ISO 6506-1 DIN EN ISO 15630-1 DIN EN ISO 15630-3 IEC 62301 + 3 more
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TechnoTeam Bildverarbeitung

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DAkkS D-K-22502-01-01 Ilmenau, DE
& 2: 2008 Leuchtdichte L / vom Typ L3 Standard Normfarbwertanteile x , y / LED-basierte Farb- und + 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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