[OSM-talk] Country Specific Route Markers

[Tom Hughes]

In message <200708151303330770.00D00991 at smtp.nsw.exemail.com.au>
        Brent Easton <b.easton at exemail.com.au> wrote:

> Could someone post a brief summary of the the current state of play
> with country-specific route marking (i.e. showing the correct
> highway/state/tourist route shields) in both Mapnik and Osmarender?

We don't have good non-country specific route marking yet (at least
in mapnik - Osmarender is a bit better) so asking for country specific
might be leaping ahead a bit.

> We have developed a scheme to use in Australia to mark Australian
> routes using a ref:au= tag:
>
>  ref:au=NR1     National Route - Highway 1 - (black on white shield)
>  ref:au=NH31    National Highway - (yellow on green shield)
>  ref:au=MR2     Metroad - (blue on white hexagon)
>  ref:au=S151    State Route - (white on blue shield)
>  ref:au=T5      Tourist Route - (white on brown Pentagon)
>  ref:au=A1      A Roads (yellow on green rectangle)
>  ref:au=B2      B Roads (yellow on green rectangle)
>  ref:au=C3      C Roads (yellow on green rectangle)
>  ref:au=M4      Motorways(yellow on green rectangle)
>
> Is this the correct way to go? 

I would just use ref= for that. No other country is doing what you are
to the best of my knowledge.

> I notice Norway seems to be using
>
>  ref:RV113
>  is_in=Norway
>
> so using the standard ref= tag, but adding the is_in tag to allow
> later Norway specific processing.

An interesting idea. I wonder if it isn't better simply to use some
bounds based idea of determining what country something is in - no
idea how hard that would be though.

Tom

-- 
Tom Hughes (tom at compton.nu)
http://www.compton.nu/