Hi there.
In case you speak German, it's perfectly okay to use German for map notes in Germany.

osmand does use this way for routing, but seems to have a preference for the horrible Amsinckstraße.

Where is that "Tiedeweg" sign? Can't remember having seen it.

Regarding the highway type, I don't think that "track" fits at all. It's wide enough for two-lane vehicles, but it was constructed (and used) as a bicycle path.