[Tagging] Roudabout, center island, type of a traffic_island?

[António Madeira]

I'm not saying the wiki is wrong, I'm saying its description is wrong
(it doesn't match what is in the wiki).

Regards,
António.

Às 18:05 de 28/04/2021, Volker Schmidt escreveu:
> No, you cannot say the wiki is wrong. You can suggest a new tagging
> for roundabout centrepieces.
> The number of mappers that have used highway=island or
> traffic_calming=island for this are a very small fraction of
> roundabout mappers.
> I guess you would need to make a formal proposal for that extension to
> the tag use.
>
>
> On Wed, 28 Apr 2021 at 19:23, António Madeira <antoniomadeira at gmx.com
> <mailto:antoniomadeira at gmx.com>> wrote:
>
>     That description is wrong and should be corrected. The wiki states
>     in its main text "A traffic island is a structure separating at
>     least two lanes of a highway for a short distance."
>     Which makes sense, since you can have a highway with two ways in
>     the same direction, split with a traffic island in the middle.
>
>     Regards,
>     António.
>
>
>     Às 14:06 de 28/04/2021, Volker Schmidt escreveu:
>>     highway=traffic_island  has no wiki page and 500 uses in Taginfo.
>>     traffic_calming=island is not applicable for a roundabout
>>     centerpiece. The wiki page traffic_calming clearly states: "
>>
>>       * traffic_calming=island
>>         <https://wiki.openstreetmap.org/wiki/Tag:traffic_calming%3Disland>
>>
>>         Trafficcalming-island.jpg
>>         <https://wiki.openstreetmap.org/wiki/File:Trafficcalming-island.jpg>
>>         An island is a small area that temporarily separates two
>>         different directions of traffic.
>>     In a roundabout there are no different directions of traffic, as
>>     it is one-way by definition.
>>     If we want to map the way how the centerpiece is planted, we
>>     should use the same tagging as we use for normal land cover. For
>>     grass it should, landcover=grass, if it's planted with flowers
>>     and bushes it becomes a leisure=garden.
>>     If there is a kerb that can be tagged a barrier=kerb.
>>
>>
>>     On Wed, 28 Apr 2021 at 16:38, Peter Elderson <pelderson at gmail.com
>>     <mailto:pelderson at gmail.com>> wrote:
>>
>>         I think the central island has a traffic function, but not a
>>         routing function. The routing function is in the junction tag
>>         of the roundabout way.
>>
>>         For road-builders the central Island is definitely an
>>         important feature, as are e.g. the splitting Islands, refuge
>>         islands, truck apron (the tilted strips  around the Islands 
>>         where truck wheels are tolerated).
>>
>>         Peter Elderson
>>
>>
>>         Op wo 28 apr. 2021 om 16:12 schreef Dave F via Tagging
>>         <tagging at openstreetmap.org <mailto:tagging at openstreetmap.org>>:
>>
>>             I don't see it as part of the highway. The road of a
>>             roundabout doesn't interact with; it goes *around* it.
>>             Routers know they're on a roundabout because of the
>>             junction= tag.
>>
>>             They're not really designed to be accessible by foot as
>>             per your wiki pages. Most in my locale are municipally
>>             maintained grass so I just mark it with landuse=grass.
>>
>>             DaveF
>>
>>             On 27/04/2021 22:32, Allroads wrote:
>>>             Roundabout.
>>>             Is the center_island of a roundabout a type of a
>>>             area:highway=traffic_island?
>>>             I think it is.
>>>             What types of traffic_island can be used?
>>>             https://en.wikipedia.org/wiki/Traffic_island
>>>             <https://en.wikipedia.org/wiki/Traffic_island>
>>>             https://en.wikipedia.org/wiki/Refuge_island
>>>             <https://en.wikipedia.org/wiki/Refuge_island>
>>>
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