[OSM-talk] mapping a highway with multiple designations

[Mario Salvini]

Karl Newman schrieb:
> On Tue, Jun 24, 2008 at 6:59 AM, Mario Salvini <salvini at t-online.de 
> <mailto: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
>     <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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>     >
>     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
There is no difference between a cycleroute, busroute, "reference-route" 
or socalled "superroads".
Your way (using ref="A;B;C") is one way to solve the problem. But using 
road-relations as I mentioned is much more elegant, I think.

Greets
  Mario