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

djakk djakk djakk.djakk at gmail.com
Wed Sep 19 13:25:51 UTC 2018

By the way, we should de-correlate the legal status of an highway from the
highway tag : with the key highway:legal_type, values : business_area or
residential_area or an other local legal classification. A highway=tertiary
could also be highway:legal_type=residential_area


Le mer. 19 sept. 2018 à 14:47, djakk djakk <djakk.djakk at gmail.com> a écrit :

> Hello !
> There is also speed limit areas, a sign is posted at the entrance of the
> area.
> Imagine that a big part of Paris becomes a 30km/h area. Is it possible to
> create a big polygon tagged with maxspeed=30, each street inside inherits
> the maxspeed value of the big polygon ? (to escape the inheritance, simply
> tag a segment of street with maxspeed=50 for example)
> djakk
> Le mer. 19 sept. 2018 à 14:22, Paul Johnson <baloo at ursamundi.org> a
> écrit :
>> On Wed, Sep 19, 2018 at 7:18 AM Greg Troxel <gdt at lexort.com> wrote:
>>> Philip Barnes <phil at trigpoint.me.uk> writes:
>>> > And if the default actually applies, or has it been overriden by local
>>> signage.
>>> >
>>> > I am not convinced that a default limit helps, if no speed limit has
>>> been surveyed I would prefer that box not to be displayed in my app.
>>> > a. It will not give me wrong and possibly costly information.
>>> > b. It makes it obvious that I should survey and map the limit.
>>> >
>>> > Phil (trigpoint)
>>> Seconded.  It's actively harmful to display an incorrect limit.
>>> Defaults will inevitably lead to it
>> In practice, this tends to be easy to weed out, as exceptions aren't
>> common (in an overall view of centerline road miles) and quickly dispatched
>> in a short series of surveys or even by armchair if there's OpenStreetCam,
>> Mapillary or Bing Streetside imagery available.
>> _______________________________________________
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