[OSM-talk] agriculture=yes/no and emergency=yes/no?

[Calum Polwart]

On Tue, 2007-12-25 at 10:23 +0100, Frédéric Bonifas wrote:
> This is not a problem for emergency vehicules but for heavy vehicules
> and the proper tags would be maxweight= or maxwidth=. If this road is
> tagged with emergency=no, what will we say to the guy cycling this :
> http://michka.blog50.com/images/medium_italie_pompier_italier_1903.jpg
> ?!
> 
> Frédéric
> 
> 2007/12/25, Alex S. <maps at swavely.com>:
> > > I cannot imagine a situation where I would tag "emergency=no"...
> >
I've been lurking for a while so its time a chipin here's a couple of
examples:

Some examples of where Emergency=yes might be appropriate (does yes =
only??):
Roads at major locations (airports, stadia etc) where 'normal' vehicles
can not access but emergency vehicles can.  These will often shortcut
significant distances to an ERV
(Link to type of signpost in UK:
http://www.opsi.gov.uk/SI/si2002/023113ew.gif )

Some small streets etc may have a specifically marked route called a
'firepath'.  Think of a street like a crescent the firepath is in the
middle of the crescent separating the two ends.  Its illegal to use the
firepath normally but fire engines can use it to improve access -->
(Picture:
http://www.andypreece.co.uk/cycling/images/barfillan_drive.jpg )(would
be cycle=no; vehicle=no; emergency=yes) This restriction is kind of shown on streetmap.co.uk http://www.streetmap.co.uk/newsearch.srf?x=254250&y=664250&z=1&ar=Y&isp=200&ism=500&searchp=newsearch.srf&mapp=newmap.srf&ax=254125&ay=664435
But not on http://www.multimap.com/maps/?hloc=GB|G52%201BE#t=l&map=55.84928,-4.33172|17|4&loc=GB:55.85098:-4.33172:15|G52%201BE|G52%201BE 
While on 'our maps' its shown too well! http://www.openstreetmap.org/?lat=55.85022&lon=-4.32831&zoom=16&layers=B0F If you are a fire engine coming along Paisley Road West from the West (which as it happens is where you'd come from!) you have to go all the way to Jura Street to loop back - according to our map... Paisley Road West flows at about 2MPH during the day (5MPh if you are a big red truck with flashing lights!! so the time may well matter...)
BUT 
Example of  emergency=No:
there could be similar streets where the path is physically blocked
because there is an acceptable route for emergency vehicles. (whereas
this picture
http://ex-parrot.com/~pete/cycle/difficult-barrier2-thumb.jpg would be
cycle=yes, vehicle=no, emergency=no) 

If your fire-engine is a bike logic can prevail... would expect anywhere marked vehicle=yes would allow emergency vehicles?