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
1,323 Accredited labs
15 Countries

Showing 176โ€“200 of 298 labs

UKAS 4707 Port Talbot, GB
(HSG 248) โ€“ 2021 LSOP6 based on HSG 248 (PCM) based on HSG 248
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UKAS 0610 Bishop's Stortford, GB
(HSG 248) โ€“ 2021 QSOP 01 based on HSG 248 (PCM) based on HSG 248 QSOP 03 based on HSG 248
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UKAS 0340 Bishop's Stortford, GB
(HSG 264, 2012) Appendix 5 of HSG 227 (2004)
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UKAS 2432 Newport, GB
(HSG 248) โ€“ 2021 staining based on HSG 248
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UKAS 9656 70 Pembroke Place, GB
accordance with (EN ISO 14644- BS EN ISO 14644-1:2015
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UKAS 29622 Chelmsford, GB
(HSG 264, 2012)
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UKAS 1119 Enfield, GB
staining based on HSG 248 (HSG 248) โ€“ 2021 (PCM) based on HSG 248
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UKAS 9681 Hextable, GB
(HSG 248) โ€“ 2021 ASB04 based on HSG 248 (PCM) based on HSG 248
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UKAS 2569 Gateshead, GB
staining based on HSG 248 (HSG 248) โ€“ 2021 (PCM) based on HSG 248 3492, ISO14966 and HSG 248 DIN EN 14629 + 3 more
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UKAS 0227 Poole, GB
Plain ring gauges (taper) Plain gap gauges (parallel) Plain plug gauges (taper) LENGTH ANGLE + 3 more
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UKAS 0228 Wimborne, GB
Plain plug gauges (parallel) length bars) LENGTH (continued) Micrometers (enzephalomyopathische Form + 3 more
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UKAS 1625 Wellingborough, GB
on BS 4401:Part 3:1970(1986) ISO 936:1998 BS ISO 21528-2:2017 BS ISO 16649-2:2001 ISO 6888-1 + 3 more
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UKAS 0199 Galdames Place, GB
(HSG 264, 2012) Appendix 5 of HSG 227 (2004) Appendix 3 of HSG 227 (2004) (HSG 248) โ€“ 2021 (PCM) based on HSG 248 + 1 more
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UKAS 28563 Driffield, GB
ISO 6579-1 ISO 21528-2 ISO 16649-2 TP/007 based on BS ISO ISO 11290-2 + 3 more
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UKAS 0373 Coventry, GB
tungsten carbide) Plain ring gauges (taper) Straight edges LENGTH (contโ€™d) Squares + 3 more
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UKAS 4007 Scunthorpe, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248
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UKAS 0405 Scunthorpe, GB
(HSG 264, 2012)
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UKAS 1899 Bournemouth, GB
ISO 7251 # = 100 A ISO 6888-3 1) A:2b based on ISO 4833-2:2013 Amd 1:2 2) A:6c based on ISO 21528-1:2017 by mos + 1 more
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UKAS 0317 Derby, GB
(HSG 264, 2012) Appendix 5 of HSG 227 (2004))
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UKAS 0626 Newport, GB
BS EN ISO 7686:2005 DIN EN 997 DIN EN 13079 DIN ISO 10381-7 DIN EN 14622 + 3 more
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UKAS 10460 Romford, GB
(HSG 248) โ€“ 2021 (PCM) based on HSG 248 DOC/002 based on HSG 248)
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UKAS 32076 Clervaux Terrace, GB
(HSG 264, 2012)
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Normec DETS

Active
UKAS 2139 Consett, GB
BS 1377: Part 2: 1990 DIN EN 12457 No DETSC 5012 based on BS EN staining based on HSG 248. (HSG 248) โ€“ 2021 + 1 more
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UKAS 7691 Shotton, GB
(HSG 248) โ€“ 2021 NSDOC 47 based on HSG 248 staining based on HSG 248. (PCM) based on HSG 248
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Not One Iota

Active
UKAS 8998 Portadown, GB
(HSG 248) โ€“ 2021 SOP-12, based on HSG 248 staining based on HSG 248 (PCM) based on HSG 248
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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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