|TODO: incorporate usage analysis and reasoning from https://lists.openstreetmap.org/pipermail/talk-au/2021-March/014445.html and https://lists.openstreetmap.org/pipermail/talk-au/2021-March/014450.html|
|surface = gravel|
|This tag has very large meaning range. Used for cases ranging from huge gravel pieces like track ballast used as surface, through small pieces of gravel to compacted surface.|
|Used on these elements|
|Status: in use|
|Tools for this tag|
For long time this tag was described at Key:surface page as "Broken/crushed rock with sharp edges, known as ballast on railways. Usually loosely arranged. Typical size for road and surface construction range between 4 and 8 cm".
It may also refer to roads of compacted surface that are unpaved but high quality roads, often allowing comfortable travel.
- Category:Gravel roads at Wikimedia commons demonstrating variety