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<div class="moz-cite-prefix">Are you seriously suggesting that
emergency services will trust a satnav in preference to their own
eyes and brains? Especially a satnav driven by data with no
proactive quality control and no-one you can sue/complain to? And
seriously incomplete data? I think you are looking at a multi-year
project to get all this information into OSM (read: "review and
correct the tagging and topology of every road in the database")
while all the time thousands of people are adding new "bad" data?
A popular dutch saying "mopping up with the tap still running"
comes to mind.<br>
<br>
Let's not have a purely hypothetical debate, let's keep it
practical. Assuming that emergency services currently use satnavs
(consumer or special-purpose) based on commercial data, what would
they say if we asked them "what would you need from OSM data to
make it a better choice than your current supplier?" I can imagine
that the time delay between changes on the ground and their
availability in a map update might be one concern; inappropriate
road classifications might be another. I would like to hear it
from them, though. Then we can look at the requirements and assess
whether it is a viable project.<br>
<br>
Colin<br>
<br>
On 16/10/2012 10:37, Simone Saviolo wrote:<br>
</div>
<blockquote
cite="mid:CAJJ1XA7FZ6KdSXco_imNvFe6GFPaFbWiud1ntr2aLhvJV3XZqA@mail.gmail.com"
type="cite">2012/10/15 Colin Smale <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:colin.smale@xs4all.nl"
target="_blank">colin.smale@xs4all.nl</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
I don't understand why emergency vehicles are so important in
this discussion. </blockquote>
<div><br>
</div>
<div>Because OSM publicly advertises the fact that its maps are
being used in the Gaza's strip by emergency vehicles that would
otherwise have no map? Just to name one. Also because emergency
vehicles may happen to operate in unknown territory. Don't limit
yourself to the ambulance that runs around its home town. </div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">In the first
place they have wide-ranging exemptions from traffic rules,
which (let's be honest) we are never going to tag in OSM. </blockquote>
<div><br>
</div>
<div>This is meaningless. We will map all restrictions; consumers
will have an "emergency vehicle" flag that will route ignoring
those restrictions. Also, while an ambulance is allowed to go
the wrong way in a one-way street (when its siren is on, of
course), it is usually advised against doing so, as in a narrow
road it may find regular traffic, which would be dangerous or at
least slow down the ambulance. So, restrictions may be ignored,
but drivers should be informed about them. </div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Secondly they
are never going to be relying on OSM data (or indeed any normal
sat-nav) for lane-precise routing. They are trained to use their
eyes and brains to make split-second decisions on what is safe
and an acceptable risk under the circumstances of that moment. </blockquote>
<div><br>
</div>
<div>Sure. Let's make an example. There's a long primary road
between towns, with solid double lines all the way from town A
to town B. Let's say it runs North-South from town A to town B.
A farmyard east of the road is burning. It can be accessed by a
road that reaches the large road; under normal circumstances,
someone coming from town A couldn't reach the crossroad and go
to the farmyard, but would be legally forced to go to town B,
turn back, reach the crossroad and go the farm. </div>
<div><br>
</div>
<div>The firemen turn on their GPS navigator, because they're
being called in from a far away city and they've never heard the
name of that farmyard. The router lawfully sends them to town A,
then to town B. They go past the crossroad and can't notice the
farmyard, because it's far away and there's a wood in between
that covers it. Also they can't see on the screen that ten
kilometres ahead they would have to turn back and go back to the
crossroad they're approaching. The firemen get there fifteen
minutes late and the farmyard is a bunch of ashes. Great work
dividing the way on a legal restriction! :-)</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Thirdly, they
will be about 0.0000000001% of the potential users of OSM data -
why should we compromise "service" to the vast majority of real
users for the hypothetical benefit of the very few.</blockquote>
<div><br>
</div>
<div>I know who makes this consideration: commercial map
providers. It's just not worth the cost, right?</div>
<div><br>
</div>
<div>Cheers,</div>
<div><br>
</div>
<div>Simone</div>
<br>
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<pre wrap="">_______________________________________________
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</pre>
</blockquote>
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