The International Union of Railways (UIC) was founded in 1922 to create standards to facilitate the operation of international railway traffic. These standards are contained within UlC-Leaflets which define technical specifications
for interoperability for rolling stock, infrastructure, signalling systems and catenary. Other Leaflets cover agreements on operational and commercial rules. Some Leaflets are mandatory (e.g. braking systems, wheelsets, draw hooks and buffers) whereas
others are only recommendatory.


The International Union of Railways (UIC) was founded in 1922 to create standards to facilitate the operation of international railway traffic. These standards are contained within UlC-Leaflets which define technical specifications
for interoperability for rolling stock, infrastructure, signalling systems and catenary. Other Leaflets cover agreements on operational and commercial rules. Some Leaflets are mandatory (e.g. braking systems, wheelsets, draw hooks and buffers) whereas
others are only recommendatory.

• Mot-clé
  PROTECTION DE L'ENVIRONNEMENT, UIC, MOTEUR DIESEL, NORMALISATION, GAZ D'ECHAPPEMENT