[Tagging] Short-term parking zones

[pbnoxious]

Hello,

On 2018-01-13 22:06, Matej Lieskovský wrote:
> I have a similar problem with the tagging of "Zone 30" and other such
> restrictions.
> 
> I understand that having the tag on every road makes it easier for
> consumers.
> I think that when a restriction is conceptually an area, it should be
> marked as an area
> because we should be making use of the fact that we have a geospatial
> database.
> A relationship feels a little like having the disadvantages of both
> approaches -
> you need to keep track of all road segments, but it is worse for consumers.

I'd like to disagree on the "Zone 30" being an actual area: Here the 
appropriate administration does usually not set a full area (with all 
houses, parks etc.) as restricted but rather the individual connected 
streets, which means that in my mind a relation would be the approach 
that resembles the nature of these restrictions the most. But as you 
already noticed: the relation does not really make things easier, so I 
would rather stick to tagging the individual roads.

The only other option that comes to my mind would be something similar 
to tagging city limit signs: Placing a node at the zone limits on the 
highways (at the position where the "Zone 30" signs are in reality) and 
tagging them with something like "traffic_sign=maxspeed_zone_limit" and 
"maxspeed=30", would de facto also define the area correctly. The 
problem here is of course that e.g. routing services would have a hard 
time determining the maxspeed of enclosed streets (especially in the 
rare case of a route not leaving such a zone), so that is not a really 
suitable approach at the moment.


Kind regards
pbnoxious