Key:tree_lined
 tree_lined
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| Description |
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Indicates that a feature is deliberately tree lined.  
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| Group: properties |
| Used on these elements |
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| Useful combination |
| Status: de facto |
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This is a property to indicate that a feature is tree lined. Typically used in conjunction with highways or waterways, i.e. linear features. It is unclear whether the tag should be used on polygons.
This property implies that the trees belong to the feature and are purposefully planted for the feature (common examples are avenues). It also commonly implies that the trees are planted in a planned order and structure (e.g. same size and type of trees or sometimes a limited number of different species, equally distanced or in a rhythmic way)
Do not use the tag when there are simply trees on neighbouring features close to the feature.
How to map
Add the tag to the feature. Preferred values are
- both - the feature has trees on both sides.
- right - the feature has trees on the right side (compared to the way direction in osm)
- left - the feature has trees on the left side (compared to the way direction in osm)
Currently the mostly used value is yes. As this could mean any of the 3 aforementioned values you should consider being more explicit.
This property on a highway or waterway can coexist with explicitly mapped tree rows or individual trees, as it indicates a property of the feature. You should not remove any of these objects or tags simply because there are explicitly mapped trees or the property on the road/waterway. (It follows that an application interested in rendering trees or tree rows will not want to automatically place generated trees next to features tagged with this key unless it is smart enough to avoid the resulting duplication. Of course automatically placing trees is only one possible way of making use of this tag in rendering).