Narrow-gauge railways in Portugal

The lines were operated by Comboios de Portugal and maintained by REFER (or the predecessor CP).

The majority of railway lines in Portugal were built to 1,668 mm (5 ft 5+21⁄32 in) Iberian gauge.

To reduce construction costs, some lines (notably in rural and mountainous parts of the country) were built to narrow gauge.

The Série 9700 diesel multiple units were purchased secondhand from the Yugoslav Railways in 1980, but frequently proved unreliable.

Media related to Narrow gauge railways in Portugal at Wikimedia Commons

A Série 9020 diesel locomotive at Livração station on the Tâmega line
Sernada do Vouga railway station on the Vouga line
A Série 9100 diesel railcar at Amarante station on the Tâmega line in 2002
A Série 9600 narrow-gauge diesel multiple-unit train at Guimarães station in 1996. The line was electrified and rebuilt as a 1668 mm gauge railway between 2002 and 2004.