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

Showing 276–300 of 849 labs

DAkkS D-K-15052-01-01 Pfaffenhofen, DE
Gleichspannung 0 mV Messgeräte > 200 mV > 2 V bis 20 V > 20 V bis 200 V > 200 V bis 1000 V + 3 more
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DAkkS D-K-20795-01-01 Waldaschaff, DE
Railway brake — magnetic track brakes (U − Ebenheit − Geradheit − Winkelnormale auch als Vor-Ort-Kalibrierung + 3 more
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DAkkS D-PL-11068-09-00 Karlsruhe, DE
DIN EN 60034-15 VDE 0530-15 IEC 60034-15 DIN EN 60044-7 VDE 0414-44-7 + 3 more
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DAkkS D-K-11068-01-00 Eggenstein-Leopoldshafen, DE
Luftkerma/-leistung Dosis Dosisleistung
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Kern & Sohn

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DAkkS D-K-19408-01-01 Balingen, DE
nichtselbsttätige − Waagen Festkörpervolumen Wägewert/ Masse oder + 3 more
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Kessler QMP

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DAkkS D-K-15118-01-01 Friedewald, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 Parallelendmaße * Einstelldorne * 1 mm Railway maintenance — track geometry (EN + 3 more
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DAkkS D-K-22363-01-01 Wiesbaden, DE
- Gleichspannung / Messgeräte Spannungsquellen - Gleichstromstärke - Gleichstromwiderstand + 3 more
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DAkkS D-K-15127-01-01 Sindelfingen, DE
Beschleunigung* Beschleunigungsmessketten (Bezugsfrequenzen) (Mittelfrequenzbereich) Beschleunigungsaufnehmer, 0,1 m/s + 3 more
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Kiwa

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DAkkS D-PL-11217-01-02 Berlin, DE
DIN EN ISO 7438 DIN 50100 ISO 9352 DIN ISO 48-4 DIN EN ISO 1675 + 3 more
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Kiwa Primara

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DAkkS D-PL-12089-01-01 Kaufbeuren, DE
BS 1363 DIN VDE 0620-2 DIN VDE 0620-2-1 ISO 12100: 2010 DIN EN 50124-1 + 3 more
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DAkkS D-K-15224-01-00 Fulda, DE
Taupunkttemperatur fixpunktzellen Normal- −196 °C bis −189,3442 °C thermometer (SPRT) Widerstandsnormal + 3 more
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Klingelnberg

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DAkkS D-K-21339-01-00 Hückeswagen, DE
Verzahnungsmesstechnik Die nachgewiesene Verzahnung und rotationssymmetrische abgedeckten Prüfkörper mit taktiler + 3 more
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DAkkS D-PL-13430-01-00 Köln, DE
DIN EN ISO 11138-3 DIN EN ISO 11138-4 DIN EN 13959 DIN 1946-4 DIN EN ISO 19458 (K 19) + 3 more
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DAkkS D-ML-13430-01-00 Köln, DE
Thrombozytenaggregation Adrenalin, Kollagen, Ristocetin, Arachid Partielle Thromboplastinzeit Fibrinogenaktivität (derived) Lupusantikoagulantien + 3 more
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DAkkS D-ML-19856-01-00 Ingolstadt, DE
Liste aller Untersuchungsverfahren Webpräsenz des Medizinischen Laboratoriu Thrombozytenaggregation Trizyklische Antidepressiva Neuroleptika (Clozapin, Norclozapin, Ola + 3 more
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DAkkS D-ML-13265-01-00 Nürnberg, DE
Antidepressiva 1: Metabolit, Paroxetin, Fluvoxamin Antidepressiva 2: Antiepileptika: Carbazepin, Sultiam, Lamotrigin + 3 more
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DAkkS D-ML-13321-01-01 Wolfsburg, DE
Retikulozyten Differentialblutbild Erythrozytenzahl Erythrozyten-Volumen (MCV) Verteilungsbreite) + 3 more
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DAkkS D-ML-13450-02-01 Würzburg, DE
Fazio-skapulo-humerale DSC2, DSG2, DSP, JUP, PKP2, TMEM43 ); SN Myopathie-Panel; SNV Myotone Dystrophie Typ 1 / M. Curschmann-Steinert (DMPK) + 3 more
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DAkkS D-ML-13355-03-00 Stuttgart, DE
Thrombozytenfunktion Antiepileptika: Benzodiazepine, Fentanyl Ethylglucuronid, Ethylsulfat Ciclosporin, Tacrolimus, Everolimus + 3 more
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DAkkS D-ML-13355-04-00 Stuttgart, DE
Zelldifferenzierung HLA Klasse I Antikörper Crossmatch (serologische Verträglichkeitsprobe im HLA-System) Serologische HLA-Klasse-I-Typisierung + 3 more
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DAkkS D-ML-13295-05-00 München, DE
HLA-Antikörpertestung (Detektion) HLA-Klasse I und II HLA-Antikörper (Spezifizierung) HLA-Antikörper Screening HLA-Antikörperdifferenzierung + 3 more
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DAkkS D-ML-13295-04-00 München, DE
Thromboplastinzeit) Thrombozytenfunktion 10-OH-Carbazepin 5-Hydroxyindolessigsäure (5-HIES) + 3 more
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DAkkS D-ML-13295-04-01 München, DE
Lamotrigin AFP HbA1c CA 125 AMH + 3 more
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DAkkS D-ML-13295-01-01 München, DE
Kleines Blutbild Differentialblutbild maschinell C-reaktives Protein (CRP) Differentialblutbild manuell Urinstatus + 3 more
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DAkkS D-ML-13295-03-00 München, DE
17-OH-Progesteron ACTH Androstendion Aldosteron Anti-TG Antikörper + 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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