[josm-dev] self-intersecting ways

[Klaus Dietrich]

am 26.03.2010 01:41, schrieb Anthony:
> On Thu, Mar 25, 2010 at 5:50 PM, Paul Johnson <baloo at ursamundi.org> wrote:
> 
>> On Mon, 22 Mar 2010 01:50:23 -0400, Anthony wrote:
>>> In OSM, the way which is tagged
>>> highway represents the physical road, right?
>>
>> Centerlines, actually.
>>
> What centerline?  The actual painted centerline (surely not, it's not always
> there, and it's not always in the center)?  The center of the physical road?
>  The center of the lanes of travel?  The center of the right of way?
>  Something else?
I'm not sure what the correct english term is, maybe "axis", but in
germany the relevent line is called "Straßenachse" or "Bauachse". See
http://de.wikipedia.org/wiki/Achse_%28Verkehrsweg%29

In my understanding, the way tagged highway represents the entire road
including the shoulder and is defined by the "Bauachse".

In my opinion this also means that as long as we don't use areas to map
roads, the only correct approach for e.g. landuse next to the road is
using the same nodes for both road and landuse. Because if the way
tagged highway IS the road and the landuse extends UP TO the road there
is no gap between them.