[OSM-talk-be] Verbodsbord C3

[Ben Laenen]

On Tuesday 01 October 2013 22:56:33 André Pirard wrote:
> vehicle=no alone is wrong because it allows access to horses.
> access=destination is wrong because it does not allow access to
> pedestrians and to horses, and delivery and emergency vehicles must be
> added.

Here's the flaw in this: no-one will do this, no editor will do this, no 
person will do this. Almost everyone in Belgium who encountered an 
"uitgezonderd plaatselijk verkeer" sign has tagged it with access= 
destination. No-one will systematically add all the tags needed to translate 
that to their own vehicle tree. Some that try will forget one or more vehicle 
type etc.

And you're an example yourself, because if you say that the "vehicle" class 
doesn't include horse drivers, well, it also doesn't include cattle, pack 
animals etc. They also have drivers, which is what the C3 sign prohibits. 
Drive a camel or an elephant and you're not allowed. Not very likely maybe, 
but nevertheless, walk next to a cow to move it between two fields and you 
have become a driver. Tagging a simple C3 sign will be a lot of fun.

Hence, in Belgium, "vehicle" will include all things that have a driver, 
because that suits our traffic code best. I've always held the belief that 
tagging should be as straight forward as possible and that one traffic sign 
(or more specifically: one element of information on a traffic sign) should 
preferably translate to one tag in OSM.


> I have just written a message saying that what we tag must be correct
> and that translates the Belgian law *very precisely* to OSM tags.  It
> should have been sent before but it follows.

Good luck. Really. I'm really interested in sorting out the access tags, you 
can look for my long winded discussions on the wiki and mailing lists to 
attest to that. But I'm long past the idea of trying to mold the entire world 
into a single set of tags without any country defined rules. But if you think 
you can do differently, please show us, I may be pleasantly surprised if you 
can.

> I know that that tagging does not look simple but it is so.
> 
> If I'm able to stop writing in this thread, I will write a message
> covering those national library issues.

Greetings
Ben