The way that I identify the reference for bridges, as opposed to highways / waterways, is to use a bridge relation and put the ref on there instead. It then makes it unambiguous what the ref applies to. The same is true for named bridges that are carrying a highway, etc. of a different name.
> -----Original Message----- > From: [email protected] [mailto:newbies- > [email protected]] On Behalf Of Nick Allen > Sent: 17 October 2009 12:20 > To: newbies > Subject: [OSM-newbies] Bridges over canals - ref=** > > Hi, > > I've been working on a section of canal in the UK, and have been adding > bridges etc. I've researched the wiki thoroughly and as far as I can > see > bridge numbers (traditional way of knowing where you are on a canal), > should be tagged using the ref=**. > > This is fine, but where a classified road crosses the canal two > references result. This link shows the A426 crossing bridge 58 over the > Oxford canal; > http://www.openstreetmap.org/?lat=52.389392&lon=- > 1.254384&zoom=18&layers=B000FTF > > As you can see, Mapnik has rendered this to show both references. > > If I'm getting the tagging right, will this cause problems for routing > software for car drivers in the future ... 'Follow the A426 for 12 > miles then cross bridge 58'. Could make the M6 more interesting as I > believe it crosses several canals. > > Am I getting this wrong, or; > a/ does mapnik need an update, or > b/ does an additional tag need to be used? > > Tallguy > (aka Nick) > > > _______________________________________________ > newbies mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/newbies _______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/listinfo/newbies
