On Mon, 11 Apr 2011 13:47:02 -0400, Phil! Gold wrote:
In my opinion, there's too much variation in how each state organizes
and
numbers its state-and-lower roads to make a uniform, US-wide rule. I
would say that state highways should be network=US:ST (where "ST" is
the
two-letter state abbreviation), and anything further (county roads,
Pennsylvania's primary and secondary state roads, California's
multi-county roads, etc.) would be US:ST:<whatever>, where the
"<whatever>" is up to the mappers in that state (and, hopefully,
documented on that state's page on the wiki).
Without some sort of general agreement between areas (as much as is
possible, anyway) it will be very difficult for renderers to do useful
things with county road relations. It would be nice if it could be
boiled down to a few different "classes" of tag for various states.
California and any states with similar schemes might use US:ST:[A-Z].
States with single-county road networks would all use US:ST:County. That
way we can at least say that all states that number county roads in the
same way should be tagged in the same way.
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