Unable to answer "How many car lanes does this road have?" – Kitzinger Straße [WÜ 28] (Tertiary Road) – https://osm.org/way/305547126 via StreetComplete 58.0:

Verkehrsinsel trennt beide Fahrtrichtungen mit je einer Spur

Attached photo(s):
https://westnordost.de/p/217506.jpg