Table 2 Reclassification of OSM road surface tags.

From: A Large Crowdsourced Street View Dataset for Mapping Road Surface Types in Africa

Classes

OSM tags

Description (https://wiki.openstreetmap.org/wiki/Key:surface)

Paved

Paved, asphalt, concrete, concrete:plates, concrete:lanes, paving_stones, cobblestone, cobblestone:flattened, metal

A road surface that has been hardened or covered with artificial materials.

Unpaved

Unpaved, compacted, dirt, earth, grass, gravel, fine_gravel, sand, wood, mud

A road surface that is not hardened or artificially covered.