On weekdays all stations are served at least every 10 minutes until the evening. There are six main lines. There is one peak hour support line. Since most lines use the same path through the city core, train departures every second minute. On most suburb lines trains depart every five minutes. On Sundays these time intervals are doubled. Most trains have 8 cars but more can be added as needed. There are a total of 120 8-car trains.