Many thanks,I've had other communications suggesting this too, interested in
seeing how other countries are doing this, and whether there is any consistency.
On Sunday, April 7, 2019, 6:18:52 PM GMT+1, Jean-Marc Liotier
<[email protected]> wrote:
On 4/7/19 6:59 PM, Kevin McPherson via HOT wrote:
road network classification in OSM is never quite the same as that used by the
Roads Agency, and there are discrepancies between the "official" data of the
roads agency, and the OSM definition. This causes confusion to anyone who wants
accurate mapping. [..]
Though Openstreetmap strives for global definitions, local variations also
exist. For example, in French Openstreetmap "trunk" must be a dual-carriage way
- that rule does not exist in the rest of the Openstreetmap world. But
divergence carries the cost of increased complexity - tread lightly there: not
all Openstreetmap communities have sufficient power to deal with it.
The ref=* tag might help you: the national highway numbering schemes reflect
the national classification - so it might be a good source of "official" truth
to carry the national road agency's vision regardless of what the way actually
is.
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