[OSM-talk-nl] junction= roundabaout

[Maarten Deen]

On 2012-11-21 20:48, Wolfgang Wienke wrote:
> Am 21.11.2012 18:48, schrieb Maarten Deen:
>> On 11/21/2012 06:45 PM, Maarten Deen wrote:
>>> On 11/21/2012 06:41 PM, Wolfgang Wienke wrote:
>>> > Hi,
>>> > I'm mapping in NL near Aachen. Can someone tell me, why there is 
>>> more
>>> > that ONE way in a dutch roundabaout?
>>> There isn't. A roundabout is always one way. If there are two 
>>> directions
>>> it is not a roundabout but a circular road.
>>>
>> Just after sending this I realized that I must have misread your
>> question. You mean why most roundabouts are made up of more than one 
>> way.
>>
>> Initially it is because of the AND import. The AND dataset was such 
>> that
>> between every junction of 3 or more roads there was a sperate way.
> What means the AND dataset?

AND donated their dataset in 2007 and was subsequently integraded into 
OSM.
<http://wiki.openstreetmap.org/wiki/AND_Data>

>> Now it is just convenient if you have different relations (like a 
>> bus
>> line) over the roundabout. Then you can indicate exactly which side 
>> a
>> relation takes.
> Well, this is really not necessary because you drive the roundabout
> alwas in the same direction.
> In Germany we only have roundabouts made of ONE way. If you use the
> relation-editor of JOSM, than you can easily recgnize a roundabout.
> Would it not be easier, to use only ONE way in a roundabaout?

I think this looks much tidier than when roundabouts are always one 
way.

<http://www.openstreetmap.org/?lat=51.32506&lon=5.97571&zoom=17&layers=T>

Also, if you make a route over a roundabout, you never use the full 
roundabout, so why would you want the full roundabout in the relation?

Regards,
Maarten