On Fri, Nov 13, 2009 at 2:30 PM, Peter Miller <[email protected]> wrote: > > Am I right that the Highways Agency is the definitive source of > whether a road is a trunk road? ie, if it is on this map[1] then it is > a trunk road and should be green, if it is not on this list then it > should not be green? > > I notice that the A12 north of Ipswich is current shown as a trunk > road, but is not on their map as one so should possibly be > 'primary' (incidentally it is also a much lower grade road than south > of Ipswich) . > > Google (ie TeleAtlas) shows it as green, as they do various other > roads (A140,A143) that are not trunk roads according to the HA.
http://wiki.openstreetmap.org/wiki/Key:highway#International_equivalence Go down to United Kingdom and you can see we work out highway=trunk/primary depending on the colour of the road signs. We ignore HA trunk status. Dave _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb

