Tag:highway=proposed
 highway = proposed
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A road that is about to be built, but where any construction work hasn't yet been started. 
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| Group: highways |
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| Status: in use |
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For roads that are scheduled to be built, but where any construction work hasn't yet been started.
Used in the same way as highway=construction; that is, you set highway=proposed together with anything between proposed=motorway through proposed=footway to proposed=motorway_junction.
If you don't know what category the road will be, set proposed=road.
See proposed=* for more guidance.
In case of mapping it - always include sources confirming that it is actually a serious project and that such road geometry was selected.
Planned roads are not objects that can be seen on the ground, so the source of the data must be specified each time. This can be the source=* tag on the object or in the changeset.
 | Note that generally, OpenStreetMap encourages information to be verifiable on the ground. Proposed features that are not visible on the ground should therefore only be mapped in exceptional cases and after a discussion with the relevant OSM community, lest they might be deleted for lack of verifiability. |
 | As for what to do if no relevant community exists is currently shrouded in zero consensus. |
It is perfectly fine to delete highway=proposed where it is not verifiable that roads are planned to be built.
An example of how a road can be planned for a long time and nothing happens:
https://www.openstreetmap.org/way/158446515/history#map=16/51.6609/16.0636