Hi, may I step in here? ghostrider44 asked me for support.

I checkt the route: https://ptna.openstreetmap.de/gtfs/DE/single-trip.php?feed=DE-BW-VVS&release_date=&trip_id=vvs-31-638-1-1-1-R-1-MoTuWeThSu-377-65

according to the Plan of VVS, OSM is completely wrong at the roundabout @ Schillerhöhe. Many ways over there are included twice without reason (between stops 4 and 8 in the linked page). Seems that someone tried to map both directions of the bus into a single relation - which is completely wrong with public_transport:version=2

I'll fix that using GTFS data as reference.

@ghostrider44: die OSM-Haltestellen bei der Schillerhöhe (Robert-Bosch-Platz) stimmen nicht mit denen aus GTFS überein.

Gruß
Toni