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
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LINDE GAS ESPAÑA, S.A. (Unipersonal)

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ENAC LC10.040 Rubí, ES
10 · 10-6 mol/mol  C  20 · 10-6 mol/mo 10 · 10-6 mol/mol  C  5000 · 10-6 mol/ 1 · 10-6 mol/mol  C  10 · 10-6 mol/mol 1 · 10-6 mol/mol  C  5 · 10-6 mol/mol 10 · 10-6 mol/mol  C  100 · 10-6 mol/m + 3 more
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LNE - Laboratoires de Trappes

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COFRAC 1-0606 Trappes Cedex, FR
DIN EN ISO 2505 ISO 18553 AMD 1 DIN EN 12099 ISO 13480 ISO 6964 + 3 more
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RvA I081 Rotterdam, NL
NEN 3650-2 NEN 3650-1 NEN 3650-3 NEN 3651 NPR 3659
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DAkkS D-ML-17085-01-00 Berlin, DE
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DAkkS D-ML-19783-03-00 Augsburg, DE
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DAkkS D-ML-13363-01-00 Ingolstadt, DE
hCG (qualitativ) Freie Fettsäuren gamma-Linolensäure, Arachidonsäure (AA) Katecholamine VMS, 5-HIES, HVS + 3 more
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DAkkS D-ML-19669-01-00 Hannover, DE
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Hämoglobin Natriumchlorid Kalium Natrium Eiweißelektrophorese: Albumin, Alpha-1-G + 3 more
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LaborZentrum Weser Franz-Josef Schmitz

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DAkkS D-ML-13273-01-00 Minden, DE
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Laborarztpraxis med. S. Wehrenfennig

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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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