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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ACCREDIA 00518 Guarene, IT
0,2 0,003 bis 0,006 (HLA DQ8 (HLA DQB*03:02) ISO 18787 BS EN 15662 DIN EN ISO 6888-1 + 3 more
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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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BIOXAL

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COFRAC 1-7423 Chalon-Sur-Saône, FR
DIN EN 17387 DIN EN 13697
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COFRAC 1-6232 Nantes, FR
NF X 43-269 NF X 43-269 - Annexe K NF X43-050 (parties utiles de NF X 43-050 ISO 16000-7
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COFRAC 1-0973 Sevres, FR
NF X 43-269 NF X 43-050 ISO 22262-1 NF X 43-269 - Annexe K NF X 43-298 + 3 more
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DAkkS D-PL-18867-01-02 Eching am Ammersee, DE
ISO 10381-8 DIN ISO 10381-1 DIN ISO 10381-2 DIN ISO 10381-3 DIN ISO 10381-4 + 3 more
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UKAS 0011 Guildford, GB
DIN EN ISO 18119 BS EN ISO 10460:2018 BS EN ISO 11623:2015 BS EN 15888:2014 BS EN 14876:2007/Internal proceduresDiss + 2 more
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DAkkS D-PL-19572-01-01 Bochum, DE
DIN EN ISO 6246 DIN 53160-1 DIN EN ISO 22854 (LBLS) (OMIM 611105) (c.228- DIN EN 13016-1 + 3 more
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UKAS 0578 Garston, GB
BS EN ISO 10140-2:2021 BS EN ISO 10140-3:2021 BS EN ISO 717-2:2020 ISO 7171 BS EN ISO140-3:1995 (withdrawn) + 3 more
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ACCREDIA 00662 Palermo, IT
DIN EN ISO 7730 ISO 5667-5 ISO 17604 DIN EN ISO 6888-1 ISO 8573-4 + 3 more
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UKAS 0823 Reykjavik 104, IS
Nominal value TEMPERATURE See Notes 1 to 3 TORQUE Case Manager: BC4 + 1 more
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COFRAC 1-7426 Sautron, FR
DIN EN ISO 10523 NF X 31-615 (prélèvements purge
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COFRAC 1-7368 Courbevoie, FR
NF X43-551 DIN 16961-2 DIN EN 14790 AG2 and IS EN 15259:2007 DIN EN 14181 + 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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UKAS 0757 Dunfermline, GB
(HSG 248) – 2021 14B based on HSG 248 DIN EN 12021 14A based on HSG 248 (PCM) based on HSG 248 + 2 more
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Balis Micro

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RvA L581 Boven-Leeuwen, NL
AM09 based on BS ISO 21527-1: DIN EN ISO 21528-2 DIN EN ISO 4833-2 BS ISO 15214:1998 0.95) based on BS ISO 21527-2:2008
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DAkkS D-K-15206-01-00 Oberdischingen, DE
Sound intensity — scanning method (ISO 9 Messgeräte für die Härteskale Shore A* Analoge Anzeige Railway freight wagon brake system requi + 3 more
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DAkkS D-PL-23070-01-01 Bad Wurzach, DE
DIN EN ISO17892-12 DIN 18134 DIN 18122-2 DIN 19698-1
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DAkkS D-K-20341-02-00 Bad Nenndorf, DE
Temperaturanzeigegeräte –100 °C bis - Direktanzeigende Thermometer - Thermopaare, Thermoelemente verwendete Abkürzungen:
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DAkkS D-ML-19082-01-00 Oberschleißheim, DE
Salmonella spp. Antikörper) Treponema pallidum (Lues) Thrombozytäre Antikörper dysenteriae), Vibrio cholerae + 3 more
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BeckProsper

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UKAS 8974 Kingswinford, GB
ASTM A370-24 ASTM E23-24 ASTM E 384-22 ASTM E8/E8M-24 ISO 6507-1 + 3 more
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DAkkS D-ML-13090-01-00 Hamburg, DE
Echinococcus granulosus Echinococcus multilocularis Paragonimus uterobilateralis Ascaris lumbricoides (IgG) Brucella spp. (IgG, IgM) + 3 more
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DAkkS D-K-12045-01-01 Dresden, DE
/ Messgeräte Gleichstrom- und Nieder- 10 mV > 220 mV > 2,2 V > 11 V + 3 more
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ACCREDIA 01119 Santa Croce sull'Arno, IT
ISO 16181-1 NF EN ISO-15587-2 ISO 16186 DIN EN ISO 17229 DIN EN ISO 17232 + 3 more
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DAkkS D-K-15017-01-00 Frankfurt, DE
Vickers hardness test (ISO 6507) Temperatur * Temperaturmessgrößen −35 °C Railway braking — urban guided transport Temperatur −40 °C + 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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