Unable to answer "How many car lanes does this road have?" – Acceso a la Concha de Artedo (Minor/Unclassified Road) – https://osm.org/way/364762312 via StreetComplete 61.3:

Peatonal, más bien senda ciclable que carretera.

Attached photo(s):
https://streetcomplete.app/p/332380.jpg