Danke, hab noch eine Anmerkung:
https://wiki.openstreetmap.org/wiki/Tag:access%3Dprivate
Hier steht:
Note that access=private is intended to indicate that access is restricted, not whether the object is privately owned or not. Use ownership=private or operator:type=private to record this kind of status. For example, a privately owned road with public access may be tagged like any other road with public access – without access=* tag, or with the explicit access=permissive.

Wenn es sich hier bei wirklich um einen Privatweg handelt, kann man das über ownership=private und access=permissive noch präzisieren. 