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

[Chuck Sanders]

Chipseal, asphalt, and concrete are three very different paving materials,
with very different characteristics and behavior.

>From a road engineering perspective, being able to query our inventory
database for exactly how much of each we have in a given area is absolutely
critical.

For OSM it's probably less critical, but if you're going to tag any more
detailed than a true/false for "paved", then no, those values don't overlap
at all. I can think of plenty of OSM-related uses of that information, at
least.

Chuck

On Sat, Jan 23, 2021, 11:52 Mateusz Konieczny via Talk-us <
talk-us at openstreetmap.org> wrote:

> 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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