Hoi Ivar,
De tagging van wegen als highway=track was correct. 
Hieronder de definitie volgens de OSM-wiki: 
A minor land-access road like a farm or forest track.
The tag highway=track is used for minor land-access roads that are not considered part of the general-purpose road network. Track roads are mostly used for agriculture, forestry, outdoor recreation, and similar activities on open land. 
As long as the primary purpose of the road is land access, highway=track is appropriate.
A farm track used for access to crop fields, pastures, orchards or similar agricultural land.

Aangezien deze wegen allen doodlopend zijn en alleen toegang bieden tot boerenland, is highway=track de correcte tag. Het feit dat de wegen openbaar toegankelijk zijn, heeft niks te maken met highway=unclassified.

Hieronder het verschil volgens de OSM-wiki.
Unclassified roads are public roads, usable by motor cars, less important than tertiary roads, but generally outside of residential areas (highway=residential) and not primarily used for agriculture (highway=track).

Ik hoop je heb kunnen te overtuigen. Veder ben je goed bezig rondom Ooltgensplaat.
Veel succes.
Groetjes 
