On Fri, Jun 20, 2008 at 6:25 AM, Rory McCann <[EMAIL PROTECTED]> wrote:
> Louis Liu wrote: > > Hi: > > > > How do I tag highway section that shared by two or more highways? > > > > This is an example: > > http://p2.p.pixnet.net/albums/userpics/2/2/32022/1207242904.jpg > > The road sign presents the way section is highway 19A (省道臺十九甲線) and > > also highway 172 (172 縣道). > > The situation is common in Taiwan. > > > > In cording > http://wiki.openstreetmap.org/index.php/Tw:Taiwan_road_tagging, > > highway 19A is tagged as "highway=primary" > > and highway 172 is tagged as "highway="secondary". > > > > So, how can we tag it? > > > > The relation between the two highway: > > > > > > | > > |19A > > | > > --------------========================------------------ > > 172 19A & 172 | 172 > > | > > |19A > > | > > Hi Louis, > > I believe the proper way to tag this is by using the semi-colon to > seperate the possible values. Eg 'ref=19A;172'. I think you should tag > it 'highway=primary' and not 'highway=primary;secondary'. > > At least in Ireland, there are a few national routes that have a > motorway section (eg N4 is the main road and part of it is a motorway, > the M4). The motorway section would be 'highway=motorway' > > Ref: > > http://wiki.openstreetmap.org/index.php/Faq#What_shall_I_do_for_roads_that_have_multiple_values_for_a_tag.3F > > Rory > This is very common in the US, too. Sometimes there are state highways (highway=primary or secondary) using the same road as an interstate (motorway) for a section. Since the road in the shared section is still a motorway, it's just tagged as such and then the ref values (highway numbers) that apply to the shared section are semicolon separated as Rory indicated. It might be a good idea to list the larger/more important highway first in the ref. Karl
_______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
