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Public-images-osm logo.svg surface:grade
Osm element key.svg
Rarely used tag for tagging surface quality with numeric code, consider using smoothness=* instead Edit this description in the wiki page. Edit this description in the data item.
Used on these elements
use on nodes unspecifieduse on ways unspecifieduse on areas unspecifieduse on relations unspecified
Useful combination
Status: unspecifiedPage for proposal

Tag proposed in Proposed features/Surface Quality with some use, primarily in Australia.

values ranging from 0 (very, very bad) to 3 (excellent).

Consider using instead smoothness=* and tracktype=* that are used far more widely.