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 101–125 of 1,560 labs

Alleima

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DAkkS D-PL-11123-01-02 Werther (Westf.), DE
DIN EN ISO 6506-1 ASTM E 10-18 DIN EN ISO 6508-1 ASTM E 18-22 DIN EN ISO 6507-1 + 3 more
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DAkkS D-K-19562-01-01 Kaufbeuren, DE
Durchmesser 1 mm 510 mm Rundheitsabweichung 1 mm Parallelitätsabweichung Rundheitsabweichung + 3 more
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UKAS 0666 Pontypridd, GB
DC Resistance 2.92 mm systems (continued) DC VOLTAGE AC CURRENT DC Power + 3 more
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UKAS 6093 Scorrier, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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UKAS 0212 Redruth, GB
(HSG 264, 2012)
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DAkkS D-ML-19804-02-00 Hamburg, DE
5-Fluorouracil-Toxizität (DPYD) Cowden-Syndrom (PTEN) Diffuses Magenkarzinom (CDH1) Hereditärer Brust- und Eierstockkrebs (HBOC), (BRCA1, BRCA2, CH + 3 more
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DAkkS D-ML-19804-01-00 Hamburg, DE
Cyclosporin A Everolimus FK 506 (Tacrolimus) Sirolimus 6-Methylmercaptopurin + 3 more
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DAkkS D-ML-13314-03-00 Lübeck, DE
Fra(X)-Syndrom, FXTAS (FMR1) Friedreich Ataxie (FXN) DRPLA (ATN1) Huntington Krankheit (HTT) Huntington-like (TBP, JPH3) + 3 more
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DAkkS D-ML-13314-04-00 Kiel, DE
Aldosteron 11-Desoxycorticosteron 11-Desoxycortisol 17-Hydroxypregnenolon 17-Hydroxyprogesteron + 3 more
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UKAS 1011 Warrington, GB
OM H-3 based on ISO 9698:2019 ISO 9696:2017 and ISO (HSG 248) – 2021 (PCM) based on HSG 248 staining based on HSG 248.
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UKAS 0422 Warrington, GB
a) BS 7270:2006 b) BS 3518-3:1963 (Withdrawn) ASTM E1820-18ae1 (Withdrawn) ISO 6892-2 BS EN ISO 204 + 2 more
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AmiaLab

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COFRAC 1-6573 Bagnols Sur Ceze, FR
NF X43-050 (parties utiles de NF X 43-050 NF X 43-269 –
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DAkkS D-K-19592-01-00 Pforzheim, DE
Tensile testing of metallic materials (I Feuchtemessgrößen 15 % *) > 30 % Railway bogies — wheelsets and bogies st Temperaturmessgrößen + 3 more
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UKAS 0350 Newhaven, GB
Appendix 5 of HSG 227 (2004))
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UKAS 2713 Newhaven, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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DAkkS D-PL-14501-01-03 Fürth, DE
DIN 19698-1 DIN 19698-2 DIN EN ISO 54321 DIN EN 1744-3 DIN EN 12457-2 + 3 more
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UKAS 0934 Neath, GB
(HSG 248) – 2021 ANC/AS/2 based on HSG 248 DIN EN 14791 IEC 60519-11 DIN EN 13284-1 + 3 more
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UKAS 0165 Neath, GB
(HSG 264, 2012)
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UKAS 4147 Bellshill, GB
requirements of HTM 01-06 Part E 35 °C/3 days based on HTM 2030 Part E, WHTM 01-06 Part E & BS EN ISO 15883-4 using R2A and Part E, HTM 0106 Part E, WHTM 01- + 3 more
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UKAS 30171 Bradford-on-Avon, GB
TORQUE FORCE DC VOLTAGE
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RvA I251 Rotterdam, NL
DIN EN 16407-1 BS EN ISO 10675-1 ÖNORM EN ISO 17636-1 NEN-EN 12732 ÖNORM EN ISO 17636-2 + 3 more
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DAkkS D-K-17702-01-00 Garching, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) 1) In den CMC sind die erweiterten Messu
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Asbestobel

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UKAS 8502 Nottingham, GB
(HSG 264, 2012)
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UKAS 10243 Fowlmere, GB
Analysts’ Guide (HSG 248) (PCM) based on HSG 248
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UKAS 5835 Prestwick, GB
(HSG 264, 2012)
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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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