[OSM-talk] mapping a highway with multiple designations

[Karl Newman]

On Tue, Jun 24, 2008 at 6:59 AM, Mario Salvini <salvini at t-online.de> wrote:

> Victor Snesarev schrieb:
> > Is there a way to deal with multiple highways using the same physical
> > roadway. For example, this stretch of road here
> > <
> http://www.openstreetmap.org/?lat=35.75518&lon=-78.67926&zoom=15&layers=B00FT
> >
> > is used by I-40, I-440, US 70 and US 64. Can anyone advise on how this
> > stretch of road supposed to be tagged?
> >
> > Victor
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
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> > talk at openstreetmap.org
> > http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
> >
> Hi Victor,
>
> IMO you should solve this with relations.
>
> 1st relation:
> type=route
> route=road
> ref= I-40
>
> 2nd relation:
> type=route
> route=road
> ref= I-440
>
> etc.
>
> then you just need to add the ways/nodes to the according relation (and
> please avoid overlapping ways). voila  :)
>
> Maybe http://wiki.openstreetmap.org/index.php/Relations/Routes will help
> here.
>
> Greets
>  Mario
>

No. This is not a logical route such as a bus route. All those highways
share the same physical way but outside of that section, they have their own
physical way. This is a key difference from a route relation, which uses
sections of multiple physical ways to form a logical route.

Karl
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