Fig. 5
From: A Large Crowdsourced Street View Dataset for Mapping Road Surface Types in Africa

The spatial patterns of road surface classification for the six tested 10 × 10 km study areas: (a) I; (b) II; (c) III; (d) IV; (e) V; (f) VI. The roads that have not been covered with any Mapillary street view data are represented with thin gray lines.