[Tagging] tagging the diameter of a mini-roundabout

[Philip Barnes]

On 27 January 2023 21:29:49 GMT, Florian Lohoff <f at zz.de> wrote:
>Hi,
>
>On Wed, Jan 25, 2023 at 09:25:32PM +0100, Volker Schmidt wrote:
>> I see that I was not precise with my question: I am after a way to tag the
>> overall diameter of the round surface composed of the mini-roundabout road
>> surface plus the traversable central part. This is an important measure for
>> trucks. I happen to live near one of these with an outer diameter of 12 m,
>> and that attracts regularly articulated lorries like the cheese attracts
>> flies. This triggered the question.
>
>There has been a pretty lenghty discussion in the German forum just a
>couple days back which i started. 
>
>I started a discussion about mini_roundabouts here too a couple years
>back.
>
>I still find the concept of tagging a "mini roundabout" _broken by
>design_.
>
>The main difference we have in usage is - A mini roundabout will never
>cause any announcements like "3rd exit" it will be "turn left". This
>will be pretty confusing for anything larger that a small residential
>street. 
I do find the lack of acknowledgement of mini-roundabouts by routers a strange omission. 

They just need to say Turn left/turn right/go straight on at the mini-roundabout the same as a human passenger does if they are giving directions. In terms of on-screen directions just use the normal turn arrows with a blue mini roundabout sign in the middle.


>
>And i think the misconception is still what a mini roundabout is. 
>A mini roundabout is not a mini roundabout because its center is
>traverseable. Its a matter of fixing a priority problem in busy
>junctions. 
I'm not sure I understand why there is any confusion. They are traversable.

>
>So in case you have 12m diameter and a traversable center i would not
>say thats a mini_roundabout.
Not sure about diameter, that implies something is round. The paint usually is, but the area around it very rarely is.


>
>And while at it - We should introduce a tag "traversable=yes" or
>something on the junction=roundabout way.

Why? Mini-roundabout is the standard name everyone knows, it's not just an OSM tag. If I told my girlfriend to turn right at the traversable roundabout she would be very confused.

Drawing a roundabout way in the space would usually be challenging, many you wouldn't attempt to go around.

Phil (trigpoint)