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
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UKAS 0423 Guildford, GB
CHEMICAL ASTM D4052 (Digital density
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COFRAC 1-0053 Gonfreville L'Orcher, FR
NF EN ISO 6892-1 Méthode B DIN EN ISO 6508-1 ISO 4969 DIN EN 10002-1 DIN EN ISO 643 + 3 more
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COFRAC 1-0600 Annecy, FR
NF T 90-412 DIN EN ISO 7899-1 DIN EN ISO 10304-1 DIN EN ISO 6888-2 DIN ISO 16649-2 + 3 more
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COFRAC 1-0606 Trappes Cedex, FR
DIN EN ISO 2505 ISO 18553 AMD 1 DIN EN 12099 ISO 13480 ISO 6964 + 3 more
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RvA I081 Rotterdam, NL
NEN 3650-2 NEN 3650-1 NEN 3650-3 NEN 3651 NPR 3659
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COFRAC 1-1531 Venissieux, FR
ISO 15202-3 NF X43-551 NF X 43-317 NF X 43-294 (juin DIN EN ISO 16017-2 + 3 more
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DAkkS D-PL-14165-01-00 Oldenburg, DE
DIN EN 13040 DIN EN 12580 DIN EN 13039 DIN EN 13037 DIN EN 13038 + 3 more
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LUX-TSI

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UKAS 4701 Pencoed, GB
DIN EN 13032-4 BS EN ISO 13032-1 +A1:2012 IEC 62612 ed1.0 (2013-06) IEC 62722-1 ed1.0 (2014-09) IEC 62722-2-1 ed1.0 (2014-11) + 3 more
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La Patrie srl

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ACCREDIA 02283 Ponte a Egola - San Miniato, IT
DIN EN 13520 DIN EN 1010-5 DIN EN 1570-1 DIN EN ISO 17228 DIN EN ISO 11640
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Labor 28 MVZ

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DAkkS D-ML-17085-01-00 Berlin, DE
Thrombozytenfunktionstest 5-Hydroxyindolessigsäure Amiodaron, Desethylamiodaron Tricyclische Antidepressiva Kohlenhydratdefizientes + 3 more
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DAkkS D-ML-19783-03-00 Augsburg, DE
Thrombozytenaggregation a-Hexachlorcyclohexan 2-Butanon Aceton Benzol + 3 more
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DAkkS D-ML-13272-01-00 München, DE
Drogenscreening-Qualitativer Anti-HCV-Bestätigungstest Benzodiazepine, Kokain, Opiate, Buprenor Organische Säuren Neuroleptika, Antidepressiva + 3 more
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DAkkS D-ML-13440-03-01 Berlin, DE
Thrombozytenaggregation (ADP, ASPI, TRAP) Oligosaccharide Aceton Ethanol + 3 more
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DAkkS D-ML-19677-01-01 Berlin, DE
Thrombozytenaggregation (ADP, ASPI, TRAP) Oligosaccharide Aceton Ethanol + 3 more
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DAkkS D-ML-13333-01-00 Konstanz, DE
Ampicillin Cefepim Ceftazidim HbA1c Katecholamine + 3 more
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DAkkS D-ML-19241-01-00 Hamburg, DE
qualitative Bestimmung von Antidepressiva, Cocain, Designerdrogen u Mitogenen, Medikamenten 5-Hydroxyindolessigsäure HbA1c + 3 more
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DAkkS D-ML-13201-03-01 Hamburg, DE
Thrombozytenfunktion Cyclosporin A Everolimus Lacosamid Lamotrigin + 3 more
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DAkkS D-ML-19490-01-00 Aachen, DE
Basophile Basophile (rel.) CD3- CD16+ CD56+ CD3- CD19+ CD10+CD3+ + 3 more
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DAkkS D-ML-18018-01-00 Kiel, DE
10-Hydroxy-Carbamazepin 9-Hydroxyrisperidon Amiodaron, Desmethylamiodaron Amisulprid Aripiprazol + 3 more
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DAkkS D-ML-13363-01-00 Ingolstadt, DE
hCG (qualitativ) Freie Fettsäuren gamma-Linolensäure, Arachidonsäure (AA) Katecholamine VMS, 5-HIES, HVS + 3 more
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DAkkS D-ML-13298-01-01 Hamburg, DE
10-OH-Oxcarbazepin Antiepileptika: Berechnung Medikamente Carbamazepin-epoxid Cyclosporin A + 3 more
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DAkkS D-ML-19669-01-00 Hannover, DE
Differentialblutbild Automat Eosinophile, Basophile, Normoblasten, so Hämoglobin Natriumchlorid Glucose + 3 more
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DAkkS D-ML-18419-01-00 Lübeck, DE
HbA1c Adrenalin Dopamin Noradrenalin Vanilinmandelsäure + 3 more
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DAkkS D-ML-19668-01-00 Mainz, DE
Hämoglobin Natriumchlorid Kalium Natrium Eiweißelektrophorese: Albumin, Alpha-1-G + 3 more
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DAkkS D-ML-17120-01-00 Stuttgart, DE
17-OH-Progesteron Aciclovir Aripiprazol Carbamazepin-epoxid Clozapin, Norclozapin + 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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