In the US the prefix would typically be in the network tag, like network=US:US ref=89 for US highway 89, etc. We have seen some of this in Canada as well. (CA:ON for Ontario highways etc.) Martijn van Exel
> On Jan 20, 2017, at 12:57 AM, Paul Norman <penor...@mac.com> wrote: > > On 1/19/2017 5:00 PM, Martijn van Exel wrote: >> Looking at a random one, http://www.openstreetmap.org/way/34154734 / >> http://openstreetcam.org/details/10767/4194 — I think in the US we would >> just map this as destination=Carman Road;Iriquois and destination:ref=1 > > That is how it would be typically mapped in Canada in my experience, although > it might have a prefix to the ref.
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