[Tagging] Ref tag

[Volker Schmidt]

The ref tag on a road should indicate what is on the road signs, at least
in principle.
Even though in practice what you see on the road signs varies considerably
from country to country and also inside the same country, I would consider
putting the int_ref and the national ref on roads (or route relations)
where they also appear on the road signs. In Europe these are the E routes.

On 19 June 2012 11:23, Martin Koppenhoefer <dieterdreist at gmail.com> wrote:

> 2012/6/19 Ronnie Soak <chaoschaos0909 at googlemail.com>:
> > What about ref:DE= or ref:UK= for the national and just ref= for the
> > international ID?
>
>
> This looks like an alternative, but it is not how it is actually done:
>
> there are
> 145428 int_ref
> 60611 nat_ref
> 12 ref:de
> 0 ref:DE
>
>
> also from a practical point of view (e.g. rendering) it would
> complicate things a lot if all national refs had different keys (due
> to country codes). Keep in mind that most roads don't have an
> international ref.
>
> cheers,
> Martin
>
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