[Tagging] maxspeed:type vs source:maxspeed // StreetComplete

Joseph Eisenberg joseph.eisenberg at gmail.com
Wed Sep 19 22:07:06 UTC 2018

> I’m encouraged by this:

> >”3. removes superfluous country ISO-code. Country boundaries information
>    is already available in the OSM > database, data users can just use a
>    (reverse) geocoder to find where a street is.
>    (I wrote Java library recently that does this offline in ~0.1ms)”

Does this offline reverse geo coding calculation require downloading the
global admin_level=2 boundary data? Is it a reasonable amount of data?

Does it take 0.1ms per node, or can several highway segments be checked in
the same calculation?

I imagine the same calculation could be used for other default
calculations, like the default language format,

Or it could be used to display certain features differently in different
countries: e.g. don’t use a cross symbol for hospitals in Saudi Arabia.

For the USA, how quickly can you reverse geocode admin_levels 2, 4, 6 and 8
for a road? (National, State, County and Municipal)

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