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

🇩🇪 DIN EN 14531-1 🇬🇧 BS EN 14531-1 🇫🇷 NF EN 14531-1 🇮🇹 UNI EN 14531-1 🇪🇸 UNE EN 14531-1 🇳🇱 NEN EN 14531-1

1,560 Accredited labs

17 Countries

Showing 1,176–1,200 of 1,560 labs

Scope iT

UKAS 9086 Manchester, GB

Appendix 5 of HSG 227 (2004)) (HSG 264, 2012)

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Scopus Asbestos Compliance

UKAS 10483 Ossett, GB

(HSG 248) – 2021 SAC-SOP-15 based on HSG 248 SAC-SOP-07 based on HSG 248 staining based on HSG 248

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Security Lab di Poste Italiane S.p.A

ACCREDIA 01827 Roma, IT

ETSI EN 319 412 ETSI EN 319 401 ETSI EN 319 411-2 ETSI EN 319 411-1

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SembCorp Utilities (UK)

UKAS 2210 Wilton International, GB

(HSG 248) – 2021 DI/AN/ME/025 based on HSG 248 DI/AN/ME/001 based on HSG 248 DI/AN/ME/026 based on HSG 248 (PCM) based on HSG 248

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Senseca Germany

DAkkS D-K-21043-01-00 Regenstauf, DE

Tensile testing of metallic materials (I Vickers hardness test (ISO 6507) Temperaturmessgrößen - Direktanzeigende Thermometer direktanzeigende > 200 °C + 3 more

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Sensors Europe

DAkkS D-K-22209-02-01 Erkrath, DE

− Abgasmessgeräte für Kompressionszündun Railway brake — magnetic track brakes (U Railway brakes — electropneumatic brakes Abgasmessgeräte für zündungsmotoren 5000 cm + 1 more

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ServiceCal

UKAS 0152 Heywood, GB

PRESSURE (cont’d) DC CURRENT DC VOLTAGE CFH-Gen, Macula-Degeneration Measurement + 3 more

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Sheffield Calibration Services

UKAS 9157 Sheffield, GB

LENGTH Plain plug gauges (parallel) Internal Caliper LENGTH (cont’d) + 3 more

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Shell Global Solutions (Deutschland) GmbH Fuels Laboratory

DAkkS D-PL-11327-03-00 Hamburg, DE

DIN EN ISO 12185 ASTM D 4052 DIN EN ISO 3405 DIN EN 13016-1 DIN EN 13016-2 + 3 more

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Shirley Technologies

UKAS 1066 Leeds, GB

ASTM E 2149-20 BS EN ISO 20743:2021 Section ISO 14119 BS EN ISO 20645:2004 BS 1425-1:1991 Appendix A + 3 more

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Siebert und Knipschild GmbH Ingenieurbüro für Kunststofftechnik

DAkkS D-PL-11222-01-01 Oststeinbek, DE

ISO 37 ISO 8513 DIN EN 1393 ISO 21527-2 DIN EN ISO 527-4 + 3 more

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Siemens Aktiengesellschaft DI CS SD CSS ITM CA

DAkkS D-K-11055-06-02 Fürth, DE

Thermodynamische Messgrößen Temperaturmessgrößen - Direktanzeigende Thermometer Railway brake handbooks (UIC 547) - Thermopaare, Thermoelemente + 3 more

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