UIC 544-2

Railway Braking Force Estimation Methods

UIC 544-2 provides standardized calculation and estimation methods for determining braking force in railway rolling stock across different brake system types and operational scenarios. This technical standard defines mathematical models for translating brake system pressure, line force, and mechanical leverage into actual stopping power, accounting for variables such as wheel slip, temperature effects, and load conditions. The standard enables consistent performance prediction and certification across diverse European rail systems. Accreditation for this calculation methodology ensures reproducible, safety-critical engineering assessments used in rail fleet design and operational planning.

What it measures

  • Brake force calculation from system pressure and geometry
  • Adhesion coefficient effects on available braking force
  • Load-dependent braking force variations
  • Dynamic brake force response characteristics
  • Braking force distribution optimization
🇧🇪 NBN EN 14531-1 🇩🇪 DIN EN 14531-1 🇬🇧 BS EN 14531-1 🇫🇷 NF EN 14531-1 🇮🇹 UNI EN 14531-1 🇪🇸 UNE EN 14531-1 🇳🇱 NEN EN 14531-1
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ACCREDIA 00748 Bologna, IT
DIN EN ISO 13366-2 ISO 9622 ISO 13366-2 AOAC DSM Delvotest SP-NT Visual n 011102
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DIN ISO 16649-2 DIN EN ISO 6579-1 DIN EN ISO 6888-2 DIN EN ISO 7932 DIN EN ISO 8968-1 + 3 more
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ACCREDIA 00753 Bitonto, IT
DIN EN 27888 ISO 4832 ISO 21527-1 DIN EN ISO 4833-1 DIN EN ISO 6579-1 + 3 more
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ACCREDIA 00314 Vo, IT
OIV-MA-AS313-02 R2015 OIV-MA-AS2-04 R2009 OIV-MA-AS323-04B R2009 OIV-MA-AS2-03B R2012 OIV-MA-AS311-02 R2009 + 3 more
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DIN EN 13657 DIN EN 14039 ISO 23695 UNI EN 13657 UNI EN 14039 + 3 more
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ISO 6222 ISO 7899-2 ISO 16266 Rapporti ISTISAN 2007/05 pag 59 Met Rapporti ISTISAN 2007/05 pag 22 Met + 1 more
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ACCREDIA 00634 Empoli, IT
ISO 18787 ISO 21527-1 ISO 21527-2 ISO 16649-2 ISO 21528-2 + 3 more
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ACCREDIA 01959 Torino, IT
EPPO PM 7/79 rev 2 2016/Cor 2017 EPPO PM 7/14 rev 2 2014 Appendix 3 SFN DTU n.16 r.1 2024 EPPO PM 7/14 rev 2 2014 EPPO PM 7/119 rev 1 2013 + 3 more
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ACCREDIA 00689 Mosciano S. Angelo, IT
ISO 16649-2 ISO 6579-1 ISO 6222 ISO 7899-2 ISO 9308-1 + 3 more
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ACCREDIA 01904 Benevento, IT
DIN EN ISO 13366-2 ISO 9622 ISO 13366-2
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ACCREDIA 01041 Venetico Marina, IT
ISO 4832 ISO 21527-1 ISO 21527-2 DIN ISO 16649-2 DIN EN ISO 11290-1 + 3 more
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ACCREDIA 00724 Parma, IT
DIN EN ISO 4833-1 DIN EN ISO 6579-1 DIN EN ISO 11290-1 DIN EN ISO 21528-2 ISO 16649-2 + 3 more
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ACCREDIA 00878 Bari, IT
DIN EN ISO 15587-2 DIN EN 13657 DIN EN ISO 10523 DIN EN ISO 10304-1 DIN EN ISO 17294-2 + 3 more
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ACCREDIA 00631 Vinchiaturo, IT
IEC 60512-17-1 ISO 18787 ISO 4832 ISO 15214 ISO 21527-1 + 3 more
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ACCREDIA 01291 Orbassano, IT
Salt spray / neutral salt fog test (ISO ISO 3795 DIN EN 60068-2-64 ISO 20567-1 DIN EN-60068-2-6 + 3 more
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ACCREDIA 00933 Biassono, IT
ISO 18787 DIN EN ISO 4833-1 DIN EN ISO 11290-2 DIN EN ISO 21528-2 ISO 11290-2 + 3 more
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ACCREDIA 00768 Sarzana, IT
COI/T.20/Doc n 35/rev 1 2017 COI/T.20/Doc n 34/rev 1 2017 COI/T.20/Doc n 19/rev 5 2019 OIV-MA-AS313-01 cap 5.2 R2015 OIV-MA-AS313-02 R2015 + 3 more
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ACCREDIA 00721 Salzano, IT
DIN EN 61439-1 DIN EN 62271-1 DIN EN 62271-102 DIN EN 62271-103 DIN EN 62271-200 + 3 more
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ACCREDIA 00382 San Giorgio in Bosco, IT
DIN EN 27888 ISO 15214 ISO 21527-2 DIN EN 12143 DIN 10113-2 + 3 more
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ACCREDIA 00652 Terni, IT
ISO 4832 DIN EN ISO 6888-1 ISO 21528-2 ISO 4833-1 ISO 18593 + 3 more
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ACCREDIA 01147 Legnano, IT
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN ISO 7438 DIN EN ISO 4136 DIN EN ISO 9016 + 3 more
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ACCREDIA 02310 Ravina di Trento, IT
UNI 10478-2 UNI 10478-4 UNI EN 12385-1 ISO 12076 UNI EN 13796-3 + 2 more
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ACCREDIA 00956 San Michele Extra, IT
ISO 15214 ISO 21527-1 DIN EN ISO 4833-1 DIN EN ISO 6888-2 DIN EN ISO 4833-2 + 3 more
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ACCREDIA 00191 Venezia, IT
DIN EN ISO 17294-2 DIN EN 1484 ISO 11731 DIN EN 17892 DIN EN ISO 14403-2 + 3 more
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ACCREDIA 01341 Genova, IT
DIN EN 14346 ISO 15705 ISO 23695 UNI 11184 UNI 11757 + 3 more
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Industries

Railway rolling stock engineering and design Brake system manufacturers and integrators Railway fleet operators Rail vehicle certification authorities Transport safety and compliance consulting

Related Standards

  • UIC 544-1 Railway brakes — Braking performance
  • UIC 541-01 Railway brakes — Brake pads — Part 1: Friction material specification
  • EN 14531-1 Railway applications — Safety requirements for the design of rolling stock

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