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 51–75 of 1,323 labs

AS International Corporation

UKAS 4352 Liverpool, GB

ISO 5983-1:2005/Cor.1:2008, ISO20483:201 07L.1.07 based on ISO 6865:2001 ISO 712 07L.1.02 based on ISO 6496:1999, ISO 12966-2 + 3 more

View Profile

ASOCIACION EMPRESARIAL CENTRO TECNOLOGICO DEL METAL DE LA REGION DE MURCIA

ENAC LC10.098 San Ginés, ES

EURAMET cg-18 CEM Ed CEM GUIA CEM TH-001 CEM TH-007 + 3 more

View Profile

ASOCIACION INSTITUTO DE BIOMECANICA DE VALENCIA (IBV)

ENAC LE1105 Valencia, ES

DIN EN 13864 DIN EN 14808 DIN EN 12235 ISO 2549 ISO 4919 + 3 more

View Profile

AIJU

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

View Profile

AITEX

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

View Profile

ITC

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

View Profile

INESCOP

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

View Profile

ASOCIACIÓN LACECAL, LABORATORIO DE CALIBRACIÓN ELÉCTRICA DE CASTILLA Y LEÓN.

ENAC LC10.028 Valladolid, ES

0 mV ≤ U < 200 mV 0,2 V ≤ U < 2 V 2 V ≤ 1 mV ≤ U < 220 mV 0,22 V ≤ U < 2,2 V 2,2 0 mV ≤ U ≤ 100 mV 0,1 V < U ≤ 1 V 1 V < 0 μA ≤ I < 200 μA 0,2 mA ≤ I < 2 mA 2 mA 0 μA ≤ I < 220 μA 0,22 mA ≤ I < 2,2 mA 2 + 3 more

View Profile