Metro de Lisboa
The Lisbon Metro has two stations with an island platform and two side platforms (with the island platform being used for single-direction cross-platform interchanges between lines entering downtown Lisbon): Baixa-Chiado (Lisbon Metro) (which has an inbound cross-platform transfer between the Green Line and the Blue Line) and Campo Grande (which has an inbound cross-platform transfer between the Green Line and the Yellow Line). Transfers between trains leaving downtown Lisbon require passengers to change platforms.