[OSM-talk] zones for motorway/in town/outof town?

[Elena of Valhalla]

On Thu, May 21, 2009 at 9:42 AM, Cartinus <cartinus at xs4all.nl> wrote:
>> If you ask for the limit on the ringroad, the answer is:
>> "80", because it has the tag "maxspeed=80", which has greater importance
>> than the "zone-50".[...]
> The ringroad does not have the tag maxspeed=80 !!!
>
> It has a maxspeed of 80 km/h because that is the default maxspeed of
> roads "out of town" in that country. "Out of town" was one of the three zones
> in the initial idea. It is defined by the country polygon.

what about adding a few interpreted values to the maxspeed tag,
instead? that way one can be sure that the data comes from either
local survey or some other safe source, and there is no local default
value added to new roads without some human intervention

in italy we would need the following:

italian name           | proposted value | current speed limit
urbano                 | built_area      | 50 km/h
extraurbano            | rural           | 90 km/h
extraurbano principale | half_motorway ? | 110 km/h
autostrada             | motorway        | 130 km/h

-- 
Elena ``of Valhalla''

homepage: http://www.trueelena.org
email: elena.valhalla at gmail.com