On Tue, March 9, 2010 12:37, Tom Hughes wrote: > On 09/03/10 11:29, Nathan Edgars II wrote: > >> *Are there criteria that the Highways Agency uses to define the >> primary route network (more specific than the general purpose of >> connecting major destinations) and the difference between an A road >> and a B road? Or are changes handled on a case-by-case basis? >> Thank you for any information. > > As I understand it the Primary Route Network (ie what we designate as > trunk in osm) is specifically those road which link a specific set of > towns that were themselves designated as Primary Destinations.
There's more about this on WIkipedia: http://en.wikipedia.org/wiki/Great_Britain_road_numbering_scheme http://en.wikipedia.org/wiki/List_of_primary_destinations_on_the_United_Kingdom_road_network -- Andy Mabbett @pigsonthewing http://pigsonthewing.org.uk _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
