| +/- highway=track
Roads for agricultural use, gravel roads in the forest etc.
Roads for agricultural use, forest tracks etc.; usually unpaved (unsealed) but may occasionally apply to paved tracks as well.
How to map
tracktype=grade1 or highway=unclassified
Related terms: <trail> <path> <route> <trace> <road> <track> <tread> <walk> <street> <passage>