I would most probably use the GTFS-Feed for Switzerland, if I'd have to get the tram lines in order.
Here's tram line 8 visualised from the official Swiss GTFS-Feed: https://ptna.openstreetmap.de/gtfs/CH/single-trip.php?feed=CH-Alle&release_date=&trip_id=870.TA.91-8-j24-1.70.H