[OSM-newbies] Speed Limits

[Sascha Silbe]

On Thu, Dec 11, 2008 at 05:41:21PM +0100, Alberto Nogaro wrote:

> I guess it's just because I made a late posting :-). I'm interested in 
> keeping this discussion alive, as I've encountered myself ways with 
> features (speed limit, number of lanes, even access restrictions) 
> where a different tag value for each driving direction was required.
Another way to do it that hasn't been mentioned yet is appending a 
":left" / ":right" or ":forward" / ":backward" suffix to the tag. E.g. 
use "maxspeed:forward" if the speed limit is in the same direction as 
the way is drawn on screen (visualised as arrows by JOSM).
As it's a common set of suffixes, it makes automatic evaluation of those 
tags easy, without having to use multiple values with the same key (as 
would happen if you'd encode it in the value instead of the key).

>> Unfortunately, the page looks rather cryptic to me, and I see no 
>> examples.
> The page also states that it is currently only a proposed relation, 
> the currently agreed on method for achieving its purposes being by 
> splitting the way. I also read hostile comments to this proposal in 
> the discussion page.
If you think the proposal best fits your needs, go ahead and use it 
anyway. If, in the future, there's a consensus on how to tag those 
things (that differs from the way you mapped it), you can still change 
it.
I don't see a hostile comment on the Segmented Tags proposal, but 
anyway: Unfortunately, there's currently a (small) number of people 
playing dictator in the wiki. I hope this will get sorted out within the 
next few month, but for the time being, please just ignore those little 
battles (hostile comments, pages getting moved or deleted, etc.).

CU Sascha

-- 
http://sascha.silbe.org/
http://www.infra-silbe.de/
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