The Oiã-Soure section corresponds to the southern section of Phase 1 of the high-speed line Porto-Lisbon, which will have an approximate length of 71 kilometres of high-speed line and will include (i) the adaptation of the current Coimbra Station to the needs of the high-speed, (ii) the quadrupling of the Northern Line between Taveiro and the southern entrance to Coimbra Station and (iii) an electric traction substation in the Coimbra area. It will also include single-track, levelled and two-way connections in both directions, to the Northern Line, totalling approximately 34 km in length, nearby Oiã, Adémia, Taveiro and Soure.