Introduction of 25,000-v 50-cycle a-c system; first stage, in progress, concerns Sintra branch and Northern line up to Entroncamento, involving 88 mi of double track and about 4 mi of single track; second stage, Entroncamento-Oporto-Ermezinde, comprises about 135 mi of double track and 15 mi of single track; data on rolling stock, substations, overhead equipment and signaling.
Electrification of Portugese Railways
Ry Gaz
Railway Gazette ; 106 , n 3
1957
3 pages
Article (Journal)
English
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