:::::::The S-tog just don't run like a metro. Stations are relatively far apart (like a conventional railway), numerous routes congregate on a single central station (like a conventional railway), and there are express/local trains and minor variations (like a conventional railway). Really, the only thing that seems at all metro-like beyond their frequency (which is matched by plenty of conventional railways) is the fact that they go underground through the city centre, and all trains running north from Copenhagen do that.