[OSM-talk-be] Designation=*

[Ben Laenen]

On Wednesday 29 August 2012 15:01:38 Sander Deryckere wrote:

> designation=reserved means a F99* plate.
> 
> The other access values tell you what is on it.
> 
> An other option would be to introduce the value "designated" in Belgium,
> like most other countries have. So a F99a would translate to
> 
> access=destination
> horse=designated
> foot=designated
> bicycle=designated
> designation=reserved

Maybe, but would it really make a difference compared to just using "yes"?


> and a C3 with exception for local traffic translates to
> 
> access=destination
> horse=yes
> foot=yes
> bicycle=yes

No extra tags please, C3 with destination traffic is just access=destination, 
no other tags (mappers won't put them all in anyway). If they change the 
traffic code tomorrow so it allows all mopeds as well, we'd have to go after 
each road and check its tags again. The optimal method of tagging is still one 
sign (or one bit of information on the sign) = one tag.


> And a nature reserve plate would translate to
> 
> access=private
> foot=designated
> towing_dogs=designated
> designation=nature_reserve

These access tags aren't really correct though, it varies on the signs that 
are present. And I'm only talking about the nature reserves which have the 
signs from over here 
http://wiki.openstreetmap.org/wiki/User:Eimai/Flemish_Nature_Reserves

So the designation=nature_reserve will mean that it's signed using those 
signs.


> That way, when we have some xxx=designated, we know a designation=* tag is
> missing. It looks quite complete and clear to me. I wouldn't like to
> include all values inside the designation=* tag like you did with
> "designation=road_reserved_
> for_agricultural_vehicles_pedestrians_cyclists_and_horse_riders", as there
> is a huge possibility to make mistakes, and the order of words isn't even
> defined.

Its name is actually defined pretty well in our traffic code, there's one name 
for F99a/F99b and one for F99c, and it has that same list of vehicles, 
whatever the icons on the traffic sign are. So a F99a with just pedestrians is 
still a "road reserved for pedestrians, cyclists and horse riders" even though 
the last two aren't allowed (ah, the fun you can have with traffic code :-) )

But yeah, we need something much simpler since the full name is way too error 
prone. But I'm not too sure about just designation=reserved because it's not 
really clear what it means exactly. But I have no alternatives, so it's the 
winning proposal for now :-)

Ben