[Tagging] Feature Proposal - RFC - Crossing cleanup and deprecation

[riiga]

Hello!

With the approval of the crossing:markings=* proposal there is now a 
satisfactory way of tagging whether a crossing is marked or not 
regardless of the crossing being uncontrolled or having traffic signals. 
For signals, there is crossing:signals=* which fulfills the same role 
but has not been formally approved yet.

As such, I propose to approve crossing:signals=* and additionally 
deprecate crossing=* (except crossing=no).

Please sound off your feedback and comments here, the corresponding OSM 
Community discussion thread or on the wiki talk page.
- 
https://wiki.openstreetmap.org/wiki/Proposed_features/Highway_crossing_cleanup
- 
https://community.openstreetmap.org/t/feature-proposal-rfc-crossing-cleanup-and-deprecation/6082

Best,
riiga