[Talk-us] Interstate Highways Relations List

[Apollinaris Schoell]

>
>
> I'm in danger of spending more time flaming than fixing the map, but
> have always been interested in the database schema aspect of OSM.
> Evolving tags is messier than a designed scheme, but I see the  
> wisdom of
> how it avoids the wrong design persisting.  Still, I think it may make
> sense to try to design each microfeature.
>

  good catch. total chaos yet still very useful data and fun work

> The US highways in California are really (I think) regular US  
> highways,
> but CA uses a different kind of sign.  So tagging then us_us_ca seems
> again like tagging for the renderer.  This is sort of OK, perhaps, but
> it bothers me perhaps because it's doing so in a denormalized way.
> Database users that care if something is a US highway will then have  
> to
> have a list of tags and check against that set.
>

many states had(have?) different signs. wikimedia has lots of examples.

> An alternative would be to have a shield hint tag, like
>
>  shield_flavor=us_ca
>

posted earlier. if someone is willing to write the rules for a  
renderer perfect.
but shortterm it's easier to add a symbol ref like proposed here http://wiki.openstreetmap.org/wiki/United_States_roads_tagging

> added, leaving network=us_i.  Then users that don't care about sign
> variants jus see us highways, and renderers get their hints.  Or  
> perhaps
> renderers know that a highway is in CA.  Or maybe the shield_flavor is
> needed because we're trying to match each road's actual signs, and  
> they
> aren't consistent.  Or maybe it's shield_flavour.
>
> For Route 66, I'm not clear on whether it is a historic route and the
> current legal route is elsewhere.  If so, the the historic  
> designation is
> part of the actual designation, not a rendering hint.
>
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