When a UK sign says "unsuitable for motor vehicles" or "unsuitable for
HGVs" it means "discouraged" in your terms. There is no guarantee that
you *will* get into problems, but it is just a strong warning. A road
that becomes a muddy track might present a problem for a normal car, but
a trial bike or a tractor would be fine. The warning is probably not
enforceable, i.e. if you ignore it you couldn't get a ticket for that
fact alone; luckily for many drivers it's not illegal to be an idiot.
So if the word "unsuitable" has the above semantics in normal use, it
would make sense to me to call it "unsuitable" in the tagging instead of
"discouraged" and using "unsuitable" to mean something else.
How about "unsuitable" (i.e. preferably not) and "impassable" (i.e.
don't even think about it)?
Colin
On 01/06/2012 09:09, Martin Vonwald wrote:
2012/5/31 Philip Barnes<p...@trigpoint.me.uk>:
On Thu, 2012-05-31 at 14:41 +0200, Martin Vonwald wrote:
2012/5/31 Richard Mann<richard.mann.westoxf...@gmail.com>:
http://www.bbc.co.uk/news/uk-england-bristol-17530125
(lorry stuck on very tight corner)
This is tagged hgv=unsuitable in OSM
http://www.openstreetmap.org/browse/way/69590803
In my opinion this doesn't need a special tag. Because the geometry of
the way (together with the tag width, if necessary) should carry
enough information.
Where there is signage stating 'Un-suitable For HGV', then the tag is
valid and should be used, as should 'Un-suitable For Motors', although
there are a few that I doubt the validity of.
A couple of Google examples http://goo.gl/maps/JoD9 and
http://goo.gl/maps/LCw9. I love the 2nd, 'Unsuitable For Motors'
combined with NSL.
Thanks for the examples. I wasn't aware that some real signposts
exists for this. So actually we would need two values:
* unsuitable: if you are allowed to drive/go there, but you most
certainly are not able to
* discouraged: if you are able to drive/go there, you are also allowed
to, but you should not
The value "discouraged" would be the correct one for Rob's second
example (the UK cycle paths). The value "unsuitable" would fit your
example ("Unsuitable for motor vehicles").
But we have to make sure, that this values are only applied if real
indications (e.g. signposts) are present and not e.g. if one just
thinks that some vehicle can not drive there.
Also for most data consumers (I guess) there wouldn't be any
difference between "unsuitable" and "no". The value "discouraged"
might be used for routers to add some penalty to a way.
Any more opinions on this?
regards,
Martin
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