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Public-images-osm logo.svg protect_class = 13
A climate/air protection area. Show/edit corresponding data item.
Group: properties
Used on these elements
may be used on nodesshould not be used on waysmay be used on areas (and multipolygon relations)use on relations unspecified
Status: deprecated

exclamation mark

This feature has been labeled as deprecated. The recommended replacement is: boundary=low_emission_zone.
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.