Isn't this tagging redundant? If a link road leads from a primary to a secondary, or whatever, this can be seen by looking at the tags for the two roads it connects. In principle there is no need to duplicate the information.
In practice a renderer such as Mapnik may not allow you to write such complex rules, and doing so would complicate its code. As a blue-sky idea, we could have 'virtual tags' which are generated by the server automatically when you download a section of map. As well as taking care of the different kinds of link road, these could also provide 'is_in', 'leading_to' and 'dead_end' for streets, and uphill/downhill for slopes (based on the layer of the endpoints). Some simple query language would define such virtual tags and new ones could be added if an application finds them useful. -- Ed Avis <e...@waniasset.com> _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
