[OSM-talk] mapping a highway with multiple designations

[Karl Newman]

On Tue, Jun 24, 2008 at 8:26 AM, Karl Newman <siliconfiend at gmail.com> wrote:

> 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
>> > ------------------------------------------------------------------------
>> >
>> > _______________________________________________
>> > talk mailing list
>> > 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
>

Here's the reference I was looking for:
http://wiki.openstreetmap.org/index.php/Faq#What_shall_I_do_for_roads_that_have_multiple_values_for_a_tag.3F

Karl
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