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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SALCHIM

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ACCREDIA 00591 Cavriago, IT
ISO 18787 DIN EN ISO 10304-1 DIN 40633-2 DIN EN ISO 6888-2 ISO 4832 + 3 more
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STUDIO F2 SRL

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ACCREDIA 00638 Castellucchio, IT
ISO 17604 ISO 6888-2 ISO 18787 ISO 19250 AOAC 2012.01 2016 + 3 more
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Security Lab di Poste Italiane S.p.A

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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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TEST & INNOVATION LAB SRL a socio unico

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ACCREDIA 01866 Prato, IT
ISO 17704 BS EN ISO 14362-1 ISO 1841-2 BS EN ISO 14362-3 ISO 16181-1 + 3 more
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TUV ITALIA SrL

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ACCREDIA 00173 Brugine, IT
ETSI EN 301 489-1: V2.2.3 IEC 62109-1 DIN EN 50178: 1998 IEC 61000-4-16: 2015 IEC 62109-2 + 3 more
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TUV Rheinland Italia

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ACCREDIA 00321 Pogliano Milanese, IT
IEC 60335-2-51 DIN EN 60068-2-30 IEC 61000-6-1 IEC 60335-2-54: 2008 DIN EN 50564 + 3 more
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Telsy

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ACCREDIA 01747 Orvieto, IT
ETSI EN 319 412 ETSI EN 319 401 ETSI EN 319 411-2 ETSI EN 319 411-1
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UL International Italia Srl

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ACCREDIA 00999 Carugate, IT
DIN EN 60068-2-30 IEC 61000-6-1 AS/NZS CISPR 22:2006 IEC 61000-6-2: 2005 ETSI EN 303 446-2 + 3 more
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WTLAB

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ACCREDIA 01077 Tribano, IT
IEC 62109-1 IEC 61400-21-1 IEC 62109-2 DIN EN 60598-2-4 DIN EN 60068-2-30 + 3 more
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White Lab srl - Eurolab

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ACCREDIA 00676 Cassola, IT
DIN EN 1186-3 IEC 62321-3-1 ISO 10195 EPA 6020 DIN EN 12457-2 + 3 more
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XEFRA SRL

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ACCREDIA 01259 Tortona, IT
DIN EN 60079-11 DIN EN 60079-2 DIN EN 60079-31 DIN EN 60079-1 IEC 60079-1 + 2 more
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Z LAB Srl

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ACCREDIA 01046 Cerea, IT
DIN EN ISO 11546-1 UNI EN ISO 9295 DIN EN ISO 11957 ISO 354 ISO 3741 + 3 more
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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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