[Talk-ca] GeoBase to OSM attribute mapping.

James Ewen jewen at shaw.ca
Fri Dec 26 21:15:14 GMT 2008


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




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