UIC 644

Railway Coach Bogie Behavior Assessment

This standard specifies the behavior and performance requirements for Y25 bogie type coaching stock bogies, focusing on derailment resistance, curving performance, and stability characteristics. It provides test methods and acceptance criteria for evaluating bogie performance through simulation, calculation, and track testing to ensure safe operation across varying track geometries and speeds. Compliance verification is mandatory for coach manufacturers, bogie suppliers, and infrastructure operators to maintain interoperability and prevent accidents. Accredited testing ensures comprehensive evaluation against standardized criteria, reducing operational risks and supporting evidence-based vehicle certification.

What it measures

  • Derailment coefficient and safety margin against derailment
  • Lateral and vertical wheel loads on curves
  • Curve-climbing behavior and stability
  • Dynamic response to track irregularities and switches
  • Forces on bogie frame and guidance components
🇩🇪 DIN EN 14363 🇬🇧 BS EN 14363 🇫🇷 NF EN 14363 🇮🇹 UNI EN 14363 🇪🇸 UNE EN 14363 🇳🇱 NEN EN 14363
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COFRAC 1-6680 Hrabakova 1861/1 | 702 00 Moravska Ostrava A Privoz | Republique Tcheque, CZ
NF X43-050 (parties utiles de la norme) NF X43-050 (useful parts of the standard NF X43-050 (parties utiles de la norme) NF X43-050 (useful parts of the standard ISO 16000-7
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COFRAC 1-0905 Arzacq-Arraziguet, FR
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COFRAC 1-0144 Quimper Cedex, FR
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UNE-EN ISO 7932 ISO 15213-1 ISO 21528-2 DIN EN ISO 6579-1 ISO 22964 + 3 more
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AIDIMME. INSTITUTO TECNOLÓGICO METALMECÁNICO, MUEBLE, MADERA, EMBALAJE Y AFINES

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DAkkS D-K-21076-01-01 Haldenwang, DE
Railway brake — anti-slide device (UIC 5 Railway brake — magnetic track brakes (U Railway brakes — conditions for homologa Messgeräte im Kraftfahrwesen − Abgasmessgeräte für Fremdzündungsmotor + 3 more
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ENAC LC10.235 Rinconada, ES
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NF X 43-269 ISO NF X 43-257 NF X 43-050 ISO 16000-7
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COFRAC 1-5578 Villebon-Sur-Yvette, FR
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UKAS 1282 Templeborough, GB
on BS 4401:Part 3:1970(1986) ISO 12966-2 AM/C/108 based on BS EN ISO BS 684 2.14:2001 BS EN 288-Part 9 :1999 + 3 more
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ALSTOM Transportation Germany GmbH Prüfstelle für eisenbahntypische Prüfungen an Schienenfahrzeugen

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AMETEK GmbH Geschäftsbereich Taylor Hobson

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DAkkS D-K-15032-02-00 Weiterstadt, DE
Railway brake — magnetic track brakes (U auch als Vor-Ort-Kalibrierung Rillentiefe Pt auf 0,2 µm Tiefeneinstellnormalen Rauheit auf Raunormalen + 3 more
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ANALYSIS A.C. di Alessandra Caratelli

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ACCREDIA 01245 Colleferro, IT
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COFRAC 1-7202 Courbevoie, FR
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UKAS 2136 Hebburn, GB
QOP03 based on HSG 248 QOP01 based on HSG 248 (HSG 248) – 2021 (PCM) based on HSG 248
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UKAS 0347 Hebburn, GB
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Industries

Coach and passenger vehicle manufacturers Bogie and suspension system suppliers Railway operators and depot maintenance Track infrastructure and maintenance organizations Vehicle type approval and certification bodies

Related Standards

  • UIC 518 Railway applications — Tests for the acceptance of running characteristics of railway vehicles
  • EN 14363 Railway applications — Running gear — Testing and validation of running behaviour and safety
  • UIC 505-1 Railway vehicles — gauge limits — Part 1: Rolling stock

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