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
3,687 Accredited labs
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UKAS 23262 London, GB
Whole Blood Full blood count | 520 Whole Blood Full blood count | SOP LAB 1 A, B, O, Rh (D) | SOP LAB 11 Blood Phlebotomy | SOP LAB 03 Biochemistry examination activities | Ro + 3 more
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UKAS 0173 London, GB
(HSG 264, 2012)
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UKAS 1931 London, GB
BS 7976-2 (HSG 248) – 2021 (PCM) based on HSG 248 E203 based on HSG 248 E200 based on HSG 248 + 1 more
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UKAS 4021 Rogerstone, GB
PRESSURE Hydraulic pressure (gauge) TEMPERATURE DC VOLTAGE INDUCTANCE + 3 more
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UKAS 4494 Southampton, GB
(HSG 248) – 2021 staining based on HSG 248 (PCM) based on HSG 248 QP23 based on HSG 248
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AC & MS

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UKAS 2742 Canvey Island, GB
(PCM) based on HSG 248 Analysts’ Guide (HSG 248)
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UKAS 0144 Glasgow, GB
(HSG 264, 2012) HSG 227 (2004) (HSG 248) – 2021 (PCM) based on HSG 248
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UKAS 1282 Templeborough, GB
ISO 4832 ISO 11290-1 ISO 11290-2 ISO 21528-1 ISO 22964 + 3 more
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UKAS 2136 Hebburn, GB
(HSG 248) – 2021 QOP03 based on HSG 248 (PCM) based on HSG 248 QOP01 based on HSG 248
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UKAS 31262 Belfast, GB
Morphological assessment and interpretat Molecular examination activities Immunohistochemistry examination activit Immunohistochemistry to detect CLDN 18 + 3 more
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UKAS 4352 Liverpool, GB
DIN EN ISO 15213-2 ISO 11290-1 ISO 11290-2 ISO 21528-2 ISO 6579-1 + 3 more
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AWE

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UKAS 1854 Reading, GB
(HSG 248) – 2021 (PCM) based on HSG 248 LQP007 based on HSG 248 LQP003 based on HSG 248
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UKAS 0477 Gosport, GB
the guidance of GPG 14 PERSONAL DOSE EQUIVALENT: RESPONSE:
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UKAS 2418 Cleckheaton, GB
(HSG 264, 2012) (HSG 248) – 2021 Appendix 5 of HSG 227 staining based on HSG 248 (PCM) based on HSG 248
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AIRO

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UKAS 0483 Hemel Hempstead, GB
DIN EN 1793-1 DIN EN 1793-2 ISO 1407 ISO 7171 ISO 354 + 3 more
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UKAS 0653 Milton Keynes, GB
Sound Calibrators Pistonphones based: level Microphones + 2 more
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UKAS 8504 Glasgow, GB
(HSG 264:2012) HSG 227 Appendix 5: By HSG 227 Appendix 3: By
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UKAS 9997 London, GB
Helicobacter pylori Measurement Collagen Muscle: Smooth/striated | Desmin Erythrocytes + 3 more
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UKAS 1611 Chadderton, GB
Tensile testing of metallic materials (I Charpy impact test (ISO 148-1) DIN EN 10164 ISO 6506-1 ISO 6507-1 + 3 more
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Air Surveys

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UKAS 0553 Wandsworth, GB
ASB/SOP/OM8 based on HSG 248 (HSG 264, 2012) (HSG 248) – 2021 (PCM) based on HSG 248 (PCM) based on HSG 248) + 2 more
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UKAS 2054 Manchester, GB
(HSG 264, 2012) (HSG 248) – 2021 (PCM) based on HSG 248 AEC 1 based on HSG 248 AEC 6 based on HSG 248
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UKAS 4376 Alton, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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UKAS 0681 Writtle, GB
(HSG 264, 2012) Surveying for asbestos in premises (HSG 248) – 2021 staining based on HSG 248 (PCM) based on HSG 248
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UKAS 9091 Liverpool, GB
Ethanol Cortisol Glucose Gentamicin Insulin + 3 more
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UKAS 1765 Kilmarnock, GB
DIN EN ISO 16994 DIN EN 15408 DIN EN 16117-1 DIN EN ISO 21654 DIN EN 15411 + 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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