At 06:57 PM 1/28/2008, Tom Chance wrote: >Hello, > >I'm a bit confused about these tags: > >railway=viaduct >bridge=yes >cutting=yes >embankment=yes > >I assume that 'viaduct' covers these sort of elevated rail lines so that >bridges are just for, well, bridges over other ways: >http://www.mybrightonandhove.org.uk/images/uploaded/scaled/railway_viaduct_aerial.jpg >http://www.betterpublicbuildings.gov.uk/assets/images/finalists_2006/jamestown/jamestown_large.jpg >http://www.24hourmuseum.org.uk/content/images/2005_1745.JPG > >Why is it not a property like bridge, cutting etc. and will it render >correctly? Should it be changed to viaduct=yes?
This is one of those "old" tags. Both bridges and viaducts were originally nodes. I also think it reflects the earlier more UK-centric tagging - "viaducts" are to the non-specialist those 19th century long tall multi-arched stone bridges that grace many an English valley and town. I ignore it entirely. Certainly if used, viaduct=yes would make more sense. As to way forward, I suggest there are 3 options: - Depreciate the viaduct tag entirely [*] - Use viaduct=yes - Complement the generic bridge=yes tag and develop a specialist bridge type tag for bridge devotees with precise architectural/engineering definition. Mike Stockholm * And before I set off storms of UK protest again, I mean remove it from map features NOT preventing anyone using or rendering it! :-) _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
