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

1,323 Accredited labs

15 Countries

Showing 51–52 of 52 labs

SOCIETE FRANÇAISE DE CERAMIQUE

COFRAC 1-0062 Les Ulis, FR

DIN EN ISO 10545-3 DIN EN 997 DIN EN ISO 10545-4 DIN EN ISO 10545-14 DIN EN ISO 10545-6 + 3 more

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TERANA PUY-DE-DOME

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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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