On Wed, Oct 24, 2012 at 10:31 AM, Richard Welty <rwe...@averillpark.net> wrote: > On 10/23/12 9:15 PM, David ``Smith'' wrote: >> >> If a motorway link is part of a route (one needs to actually drive on the >> link to continue on the route) then I put the ref for that route on the >> link. Otherwise, no ref tag. >> > i agree. > > by convention, ref tags get rendered on the map and users of the map > expect to see some sort of clear signage relating to the rendered content. > this is why i don't put New York State Reference Route numbers in the > ref tag, i put them in ref:unsigned which isn't rendered.
Isn't that simply tagging for the renderer? And doesn't this just mean "I put them in ref:unsigned which isn't rendered... ...yet. or ...by this particular renderer. If something is useful it should be tagged. If it *is* tagged, we should have a consensus on the tag's meaning and correct usage. If it can be easily derived from somewhere else, then IMHO it shouldn't be tagged. I think that a link road is not the motorway itself, and therefore should not have a ref tag. If you are driving, and you are on the link road, are you on the motorway? I say 'no', you are on a road leading to the motorway (or from the motorway to another road). I suppose you could programmatically determine the class of road and know that if ref is present, and highway=motorway then it means 'we are on the motorway'. If ref is present and highway=motorway_link then it means we are leaving or entering the motorway. Actually, having just re-read what I wrote it means we should only tag ref on link roads leading *to* the motorway. I suppose I am arguing both sides. I still maintain that a little redundancy is good, but if we can easily derive something then we shouldn't tag it. Otherwise we create a maintenance problem, and a problem when one tag is updated but not its (redundant) counterpart. Best wishes, Andrew _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
