CP Class 0450

Image:Flickr - nmorao - InterRegional 862, Estação de Livração, 2008.06.17.jpg|thumb|200px|left|A CP Série 0450 at Livração station in the Douro Valley, formerly the junction for the Tâmega line
The Série 0450 is a type of diesel multiple unit train used by the Portuguese Railways. They were originally built in 1965-66 as the Série 0400. Following extensive modernisation and refurbishment in 1999 they were redesignated Série 0450; 19 units are in service.
They are used on numerous services, including the international service between Porto and Vigo.