[Talk-us] surface=chipseal vs surface=asphalt

[Mateusz Konieczny]

I was helping a newbie mapper from US (on Discord) and discovered
https://en.wikipedia.org/wiki/Chipseal
https://wiki.openstreetmap.org/wiki/Tag:surface%3Dchipseal

https://wiki.openstreetmap.org/w/index.php?title=Tag:surface%3Dchipseal&oldid=1388275
(how surface=chipseal looked until today)

Is it something considered as substantially different from regular asphalt concrete?

Is surface=chipseal valid value or pointless duplicate of surface=asphalt?

Is it something that should be eliminated or used more widely?

Should it be documented at https://wiki.openstreetmap.org/wiki/Key:surface
or considered as deprecated?

Asking on talk-us first as it appears to be common especially in rural USA.
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