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<div class="moz-cite-prefix">On 2014-04-23 16:37, Richard Welty
wrote :<br>
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<blockquote cite="mid:5357D022.9090106@averillpark.net" type="cite">
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<div class="moz-cite-prefix">On 4/23/14 10:14 AM, André Pirard
wrote:<br>
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On 2014-04-22 23:46, Richard Welty wrote :<br>
<span>> i would like to add emergency (for emergency
vehicles) to the list of<br>
> vehicle types for the except tag.</span><br>
Supposing that emergency vehicles can do almost everything (who
would tell a fire van for example not to drive on the wrong side
over some distance or make a forbidden turn if that's to put out
a fire without endangering other road users), I think that
routing devices should apply special logic for them to disregard
most restrictions. Hence, what should be on the map instead is
restrictions that they should obey despite that, sort of telling
them "if you disregard this, you won't put out your fire".<br>
</blockquote>
if this is the case, then it needs to be explicit in the wiki <br>
so that routing engines can handle it.<br>
<br>
i'm not sure that it is generally the case. i have looked it up in<br>
New York State law and it is certainly true in this jurisdiction,
but<br>
for the US at least, it'll be state by state.<br>
<br>
the signage in some other states in the US for restricted U-turns
has<br>
an explicit authorization posted at each U-turn. i honestly don't<br>
have a feeling for how general the notion that emergency vehicles<br>
can ignore all access restrictions really is.<br>
</blockquote>
You're right. The Belgian code, that calls them priority vehicles,
does not allow them a general right but specific rights: passing red
lights after stopping, over-speed, shoulder lane, passing
destination street signs, and maybe more (when they thought of it
;-)).<br>
But the most prominent rule is that other vehicles must stop on the
road side to let them pass. And, in fact, they do what they want
when everything is frozen in the streets and nobody would blame if
they're cautious.<br>
I remember a two separate lane bridge leading just next to a railway
crossing that closed for more than 10 minutes just because service
wagons were manœuvering to and fro. I imagined that an ambulance
going to the nearby hospital would have dodged the full lane through
the empty lane and crossed the closed railway after a visual
security check. <br>
<br>
But OSM must obey the law.<br>
<br>
Cheers,
<br>
<br>
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<td>André.</td>
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