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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COFRAC 1-5606 Brussieu, FR
NF X 43-269 NF X 43-050 NF X43-269 – Annexe NF X43-050 (parties utiles de la norme) NF X43-050 (useful parts of the standard + 3 more
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COFRAC 1-6680 Hrabakova 1861/1 | 702 00 Moravska Ostrava A Privoz | Republique Tcheque, CZ
NF X43-050 (parties utiles de la norme) NF X43-050 (useful parts of the standard NF X43-050 (parties utiles de la norme) NF X43-050 (useful parts of the standard ISO 16000-7
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COFRAC 1-0905 Arzacq-Arraziguet, FR
0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN ISO 16649-2 DIN EN ISO 6888-3 DIN ISO 11665-4 + 3 more
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ADRIA

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COFRAC 1-0144 Quimper Cedex, FR
DIN EN ISO 21528-1 DIN EN ISO 21528-2 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN ISO 16649-2 + 3 more
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AECOM SPAIN DCS, S.L. (Unipersonal)

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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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COFRAC 1-1974 Egly, FR
NF EN 12469 Annexe H pour PSM NF X 44-201 (Octobre 1984) pour PSM NF EN 12469 Annexe G NF X 44-201 DIN EN 12469 + 3 more
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AGQ LIFE SERVICES, S.A. (Unipersonal)

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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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DAkkS D-PL-22637-01-02 Kiel, DE
DIN ISO 10381-2 DIN ISO 10381-4 DIN ISO 10381-5 DIN ISO 18400-104 DIN ISO 18400-203 + 3 more
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AGRUPA LABORATORIO, S.L.L.

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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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AGÉNCIA CATALANA DE L´AIGUA

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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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AIDIMME. INSTITUTO TECNOLÓGICO METALMECÁNICO, MUEBLE, MADERA, EMBALAJE Y AFINES

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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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AIP

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DAkkS D-K-21076-01-01 Haldenwang, DE
Railway brake — anti-slide device (UIC 5 Railway brake — magnetic track brakes (U Railway brakes — conditions for homologa Messgeräte im Kraftfahrwesen − Abgasmessgeräte für Fremdzündungsmotor + 3 more
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AIRCRAFT COMPONENTS MAINTENANCE SERVICE, S.L. (Unipersonal)

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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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AIRTHEMIS SUD EST

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COFRAC 1-7447 Venelles, FR
NF X 43-269 ISO NF X 43-257 NF X 43-050 ISO 16000-7
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AISICO

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ACCREDIA 00378 Pereto, IT
DIN EN 1793-5 ASTM E 415 21 DIN EN 14726 DIN EN 1794-1 DIN EN 1794-2 + 3 more
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AKL Messtechnik

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DAkkS D-K-18095-01-00 Karlsfeld, DE
/ Messgeräte 0,001 V > 0,22 V > 2,2 V > 11 V + 3 more
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DAkkS D-PL-14191-01-01 Frankfurt (Oder), DE
DIN 38402-A 11 DIN 38402-A 12 DIN 38402-A 13 DIN ISO 5667-5 (A 14) DIN EN ISO 5667-6 (A 15) + 3 more
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AL-PRO

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DAkkS D-PL-11316-01-00 Großheide, DE
IEC 61400-12-1 * IEC 61400-12-5 * IEC 61400-50 * IEC 61400-50-1 * IEC 61400-50-2 * + 1 more
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ALDARIM

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COFRAC 1-6043 Sainte Helene Du Lac, FR
NF X 43-269 NF X 43-050 NF X43-050 (parties utiles de ISO 16000-7
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ALEX STEWART ASSAYERS IBERICA, S.L

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ENAC LE2541 Erandio, ES
ISO 10469:2006)
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ALS

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COFRAC 1-5853 Saint-Pierre-De-Chandieu, FR
NF X 43-269 NF X43-050 (parties utiles de ISO 22262-1 NF X 43-257 NF X 43-050 + 1 more
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ALS France

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COFRAC 1-1364 Saint-Quentin-Fallavier, FR
DIN EN 14902 DIN ISO 16000-3 DIN EN ISO 16017-1 DIN EN ISO 16017-2 DIN ISO 16000-4 + 3 more
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ALS France – Site de Paris

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COFRAC 1-5578 Villebon-Sur-Yvette, FR
NF T 90-412 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN EN ISO 16649-3 DIN EN ISO 6888-3 + 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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