Frederik Ramm <frede...@remote.org> writes: > Hi, > > On 07.09.2017 16:51, Max Erickson wrote: >> Broadly speaking, yes, such continuity should apply. Maybe not using >> exactly the same rule as the US DOT. > > I know this is talk-us and I won't attempt to say anything USA specific > but such continuity definitely does not apply world-wide in OSM (there > have been cases where people tried to enforce such continuity without > local knowledge only to be repudiated by locals).
I also don't think there is a continuity notion in the US in OSM. In particular, in the US, we have a notion of primary is a US highway (or a state highway that is equally important). So a continuity property in OSM tagging tends to follow from continuity in the underlying networks. trunk, however, is special. It more or less means "primary which is 50-90% of the way to motorway". So that means there are stretches where it changes, and that's ok. (it shouldn't change every one mile, but 5 miles is defintely normal)
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