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Public-images-osm logo.svg maxspeed:advised
Using this tag is discouraged, use maxspeed:advisory=* instead. Show/edit corresponding data item.
Group: restrictions
Used on these elements
should not be used on nodesshould not be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Status: deprecated

exclamation mark

This feature has been labeled as deprecated. The recommended replacement is: maxspeed:advisory=*.
The reason is documented in Deprecated features. You are still free to continue to use or interpret this tag as you see fit since OpenStreetMap does not have “banned features”.
Under no circumstances should you (semi-)automatically change “deprecated” tags to something else in the database on a large scale without conforming to the automated edits code of conduct. Any such change will be reverted.

Deprecated way of specifying an advisory speed limit, maxspeed:advisory=* should be used instead

No vote appears to have taken place for either maxspeed:advisory=* or maxspeed:advised=* but the community has accepted advisory over advised.

See the history of the tags, which shows that advised has barely seen any more usage since 2017 when advisory overtook it in usage.