[Tagging] roundabouts without obstacles in the middle

[Colin Smale]

Maybe we should have roundabouts as a relation, containing all the road
segments which should produce a closed polygon. Then we put the centre
obstacle stuff on the relation. That would be closer to the OSM model of
having one OSM object for one real-world object. Then a magic roundabout
could be modelled as a nested object with the individual roundabouts as
members. 

//colin 

On 2015-11-04 11:34, Gerd Petermann wrote: 

> I just notice that center_barrier or center_obstacle would
> be US spelling, so it has to be centre_*
> 
> In other words, we should probably not use a key that is 
> different in UK / US spelling, else we'll see many wrong
> entries.
> 
> Another problem that I see here is that we allow to map 
> a roundabout as multiple ways with the junction=roundabout 
> tag. What would it mean if they don't all show the same 
> values for the obstacle? 
> 
> Gerd
> 
> ________________________________________
> Von: Florian Lohoff <f at zz.de>
> Gesendet: Mittwoch, 4. November 2015 11:03
> An: Tag discussion, strategy and related tools
> Betreff: Re: [Tagging] roundabouts without obstacles in the middle
> 
> On Tue, Nov 03, 2015 at 05:35:53PM +0100, Colin Smale wrote: 
> 
>> Hi Gerd,
>> 
>> Personally from a navigation point of view I expect roundabouts and
>> mini-roundabouts to be treated the same, i.e. "take the first exit at
> 
> They are currently not - Most navigational software basically does
> not know about mini-roundabouts because they are difficult to
> preprocess (One needs to add ways).
> 
> I'd like mini_roundabouts to disappear and be replaced with
> an additional tag on a roundabout which tells about the existance
> of an obstacle in the middle which makes it one less special case.
> 
> junction=roundabout
> center_obstacle=clear/yes/no/drivable
> roundabout=flat/obstacle
> 
> Whatever ... So processing a roundabout is ALWAYS the same from the
> navigational perspective and changes only from route selection when
> your vehicle is getting longer.
> 
> Flo
> --
> Florian Lohoff                                                 f at zz.de
> We need to self-defend - GnuPG/PGP enable your email today!
> 
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