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

Paul Johnson baloo at ursamundi.org
Fri Sep 21 23:36:03 UTC 2018

On Fri, Sep 21, 2018 at 6:05 PM Martin Koppenhoefer <dieterdreist at gmail.com>

> sent from a phone
> > On 19. Sep 2018, at 21:16, Tobias Zwick <osm at westnordost.de> wrote:
> >
> > This is a good argument against tagging an explicit maxspeed=X when
> > there is actually no speed limit sign around (X is what the OSM mapper
> > by his knowledge about the law thinks should be the default limit here).
> everything that you map will be according to your understanding of it, I
> cannot see a good argument for not tagging implicit limits, even more as
> there is judgement needed based on the situation (something humans can do
> much better than computers). Every holder of a driving license should have
> the requisites to recognize the speed limit on a given piece of road in
> their local area, so it doesn’t require specialist knowledge.

Even then, those of us who *do* have specialist knowledge are more likely
to contribute such information; why discourage that, further diseminating
that knowledge in a more readily digestible format?

> There actually is a speed limit on most roads, including those without
> explicit signage. Omitting it will leave us in the situation that it really
> becomes unclear whether there is no sign or nobody has bothered to enter it.

In Oregon and a good number of Oklahoma counties, that would be a
for-certain thing on all public roads.
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