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
๐Ÿ‡ฉ๐Ÿ‡ช DIN EN 14198 ๐Ÿ‡ฌ๐Ÿ‡ง BS EN 14198 ๐Ÿ‡ซ๐Ÿ‡ท NF EN 14198 ๐Ÿ‡ฎ๐Ÿ‡น UNI EN 14198 ๐Ÿ‡ช๐Ÿ‡ธ UNE EN 14198 ๐Ÿ‡ณ๐Ÿ‡ฑ NEN EN 14198
1,560 Accredited labs
17 Countries

Showing 26โ€“50 of 344 labs

Air Surveys

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UKAS 0553 Wandsworth, GB
(HSG 248) โ€“ 2021 APP 7 based on HSG 248 (PCM) based on HSG 248 (PCM) based on HSG 248) APP 15 based on HSG 248 + 2 more
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UKAS 0232 Manchester, GB
(HSG 264, 2012)
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UKAS 2054 Manchester, GB
(HSG 248) โ€“ 2021 AEC 1 based on HSG 248 (PCM) based on HSG 248 AEC 6 based on HSG 248
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UKAS 4376 Alton, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248
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UKAS 0681 Writtle, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 staining based on HSG 248 (HSG 264, 2012) Appendix 5 of HSG 227 (2004))
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UKAS 1765 Kilmarnock, GB
BS ISO 18283:2022 ASTM D2234 (location E) ASTM D2013 (location B) BS ISO 5074:2015; and ASTM D409:2016 + 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) โ€“ 2021 (PCM) based on HSG 248
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UKAS 0212 Redruth, GB
(HSG 264, 2012)
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UKAS 1011 Warrington, GB
OM H-3 based on ISO 9698:2019 ISO 9696:2017 and ISO (HSG 248) โ€“ 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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UKAS 0350 Newhaven, GB
Appendix 5 of HSG 227 (2004))
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UKAS 2713 Newhaven, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248
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UKAS 0934 Neath, GB
(HSG 248) โ€“ 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 ยฐC/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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Asbestobel

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UKAS 8502 Nottingham, GB
(HSG 264, 2012)
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UKAS 10243 Fowlmere, GB
Analystsโ€™ Guide (HSG 248) (PCM) based on HSG 248
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UKAS 5835 Prestwick, GB
(HSG 264, 2012)
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UKAS 2230 Prestwick, GB
(HSG 248) โ€“ 2021 LSD.ASB.02 based on HSG 248 LSD.ASB.04 based on HSG 248 (PCM) based on HSG 248
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UKAS 10194 Hockliffe, GB
Analystsโ€™ Guide (HSG 248 (PCM) based on HSG 248
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UKAS 0298 East Kilbride, GB
(HSG 264, 2012)
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UKAS 24642 Mansfield Woodhouse, GB
(HSG 264, 2012)
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UKAS 0472 Grays, GB
(HSG 248) โ€“ 2021 QOP03 based on HSG 248 (PCM) based on HSG 248 (PCM) based on HSG 248) QOP01 based on HSG 248 + 1 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 โ€” Braking power
  • UIC 541-05 Railway brakes โ€” Anti-slide device
  • EN 14198 Railway applications โ€” Wheelsets and bogies โ€” Safety requirements for thermal management

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