On 01/24/2011 11:06 AM, Frankie Roberto wrote:
[...] I don't think you'd consider Embankment and
Charing Cross stations to be part of the same stop area, even though
they're very close to each other? On the other hand, some stop areas
(Waterloo perhaps) may be huge, even though it may take you more ten
minutes to get from one stop to another (even from one tube platform to
another).
I don't exactly remember Charing Cross area, but I know where you're
going with it. I actually see an advantage of OSM over traditional
routing software. I have been sent by HAFAS (THE German routing
application) from one bus stop to another very close one, but across a
stream. The app simply calculates distances in a straight line. OSM, on
the other hand, does have all the information: foot passages, bridges, etc.
Again, let's leave to the software what is relatively easily calculated.
And if a connection is too difficult (Charing Cross-Embankment above),
it can be added to the connections cache. Such caches (static tables)
are present in all major routing apps, so again, nothing new here. And
much less work.
I don't know whether this is intended from the current proposal or not,
but I think you could construct a definition of stop areas along the
lines of:
"a collection of public transport stops, often of differing modes, which
are often physically connected by short walkways, often sharing the same
name, are advertised as being an interchange on public transport maps
and diagrams, and may be treated as a valid interchange by fare structures."
I must disagree, see above.
Greetings,
LMB
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