[OSM-talk] Country Specific Route Markers
darryl at shpak.ca
Wed Aug 15 14:26:39 BST 2007
Brent Easton wrote:
> Could someone post a brief summary of the the current state of play with country-specific route marking (i.e. showing the correct highway/state/tourist route shields) in both Mapnik and Osmarender?
> Is there a wiki page for this?
> Is there a consensus on the best way to encode this information now?
> We have developed a scheme to use in Australia to mark Australian routes using a ref:au= tag:
In Canada, we've been simply using ref= to hold the highway numbers, and
highway=trunk/primary/secondary/etc. to specify the legal status of the
road. For instance, in my province, Manitoba, the highway network can be
broken down into:
National highway system highways (highway=trunk)
Provincial trunk highways (highway=primary)
Provincial roads (highway=secondary)
Then, I use ref= to hold the highway number. The general idea is to use
generic/standard tags as much as possible, so that any renderer or route
planner or other tool can understand them. Then, we want to create
country- or province-specific rules for the renderers, which would be
able to draw these generic tags in a localized manner (drawing the ref
numbers for the various classes of highway in the correct shield).
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