On 20/04/2011 12:11, Richard Fairhurst wrote:
Peter Miller wrote:
What tagging would you expect us to use within OSM to identify
something as being part of this network?
Just route=bicycle, name=National Byway should be enough IMO. I wouldn't
really call the National Byway a network - it's a circular route with the
odd spur - but I guess that's in the eye of the beholder.
People seem to find this an important distinction, but it's a little
opaque to me. I mean, I understand that mathematically a network is a
collection of connected points (so that you can always navigate between
any two), and that a route is one way between two nodes. But that
doesn't help me distinguish between the NB and the Sustrans NCN - just
that the Sustrans network is bigger. If I am planning a cycling trip
(oops nearly used the word route there) then I will choose whatever
works best, which is likely to be a collection of segments from several
different routes.
(Bear in mind that, though I wouldn't go so far as to call the NB
"vapourware", its ambition has thus far exceeded its reach. It's a lovely
project but I think the completion date has slipped by about 10 years so
far. It's a bit like standing at a station when the departure board always
says it'll be here 3 minutes from now... and does so for an hour. We
should be fairly careful to tag what the NB is, not what it wants to be.
Even the 'National Map' on the NB website overstates its existence: there
is no signage in Gloucestershire, and only intermittent signage in
Oxfordshire where it coincides with the NCN, even though it claims both
were completed in 2009.)
I completely agree about only tagging what's on the ground. But I've had
the opposite experience of the NB from you - in the south west I have
found signs in places where I had not expected them. (Mind you it's hard
to know what to expect as the NB south-west map is out of date and out
of print too.) That's one reason I am keen to get them rendered on the OCM.
Oh, absolutely. The National Byway is not made up of byways - in fact,
it's expressly meant to be more an "on-road" network than (say) the NCN,
which is why touring cyclists like it.
I think there's an older meaning of the word "byway" to mean any minor /
unclassified / back road. Perhaps that meaning has been eclipsed since
the (relatively) recent reclassification of RUPPs and BOATs, but I guess
it was what the NB people intended.
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