2008/12/26 Jason Reid <[email protected]> > James Ewen wrote: > > Just looking at some attributes... > > > > The alleyway/lane is currently mapped as highway:service. I would > > suggest that highway:service is more appropriate. Here's the > > description for a sevice road: > > > > Generally for access to a building, motorway service station, beach, > > campsite, industrial estate, business park, etc.. This is also > > commonly used for access to parking and trash collection. Sometimes > > called an alley, particularly in the US. > > > > Local/unknown is currently mapped to highway:service. This should > > probably be highway:road. where that is described as: > > > > Road with an unknown classification. This tag should be used > > temporarily until the road has been properly surveyed. Once it is > > surveyed the highway tag should be changed to record the appropriate > > classification. > > > > Rapid Transit is currently mapped to highway:bus_guideway. I'm > > thinking railway:light_rail, at least in Edmonton, our rapid transit > > system is a light rail transit system. Perhaps other areas of Canada > > have a rubber tire based guided transit system. > > > > When working on another GeoBase to public map project, I ended up > > making Freeway and Expressway map to the same road type, with Highway > > mapped to the next lower level. > > > > There's no mapping to highway:trunk. I'd have to dig into the NRN > > deeper to look at sample roads and tags again, but I think our top > > level roads would map to highway:motorway. This would include such > > entities as the Queen Elizabeth II Highway (#2) between Edmonton and > > Calgary, although in some areas the restricted access limits don't > > quite apply. > > > > In Alberta, we haven't tagged anything as highway:motorway. Our top > > level tag is highway:trunk. This GeoBase/OSM project could work to > > unify the tagging across the country! > > > > What about Freeway -> highway:motorway, Expressway -> highway:trunk, > > Highway -> highway:primary? > > > > James > > VE6SRV > > > > _______________________________________________ > > Talk-ca mailing list > > [email protected] > > http://lists.openstreetmap.org/listinfo/talk-ca > > > The prototype import script > (http://svn.openstreetmap.org/applications/utils/import/geobase2osm/) > was built using the following: > > > However, there are corrections made to this, mostly to align things with > what each province classifies the roads as (a classification that > doesn't map directly to geobase as each province has its own). This is > to accomplish getting certain things to be correct. For instance, when I > last looked at the geobase data there were some highways that were > primary in one province, but crossed the border and were a secondary > highway in the other. But geobase used the same classification level on > both sides. Each province has a set of guidelines as to which number > groups mean what, which maps closer to the OSM based guidelines then how > Geobase maps the data IMO. Then there are also considerations for things > like the NHS highways, which are laid out on the Canadian Tagging > Guidelines > ( > http://wiki.openstreetmap.org/wiki/Canadian_tagging_guidelines#Highway_Tags > ) > > Personally I can't see any real way to do the import without taking the > differences between the provinces into account.
I think homogeneous tags are very important within OSM. Therefore we should make everything possible to map Geobase road classification Canada wide. Geobase road classification as described in their Feature Catalogue<http://www.geobase.ca/doc/specs/pdf/GeoBase_FeatureCatalogue_SegmentedView_NRN_2_0_EN.pdf> is a result of Provinces and Territories consensus. So the mapping between Geobase ans OSM should be one to one. My proposed tags: freeway motorway expressway primary arterial secondary collector tertiary local/street residential I started the feature tagging on the wiki<http://wiki.openstreetmap.org/wiki/Geobase_NRN_-_OSM_Map_Feature> . Michel > > > -Jason Reid > > > > _______________________________________________ > Talk-ca mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-ca >
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