"The noexit=yes tag serves only one purpose and has two different "data consumers": the next human mapper that comes along and automated QA tools. It allows those two data consumers to know that a way that ends close to another way but is not connected to it is not a mistake. For that purpose it should be on the node at the end of a way that is very close to but not touching another way."
+1 Agreed. I had a funny feeling this conversation would arise again. The matter is simple and is spelled out in the snippet from Tod. I use the noexit tag on the last node of a highway that offers no way forward, mostly for other mappers so they do not have to investigate these dead_ends again. Tagging the way makes no sense to me because there could be legitimate routable destinations before the dead_end is reached. If you must tag something at the beginning of a dead_end, tag the sign. On Sat, May 31, 2014 at 5:11 AM, Tod Fitch <[email protected]> wrote: > Any decent router will totally ignore a noexit=yes tag as it determines > the topology from the actual ways and how they are connected. > > The noexit=yes tag serves only one purpose and has two different "data > consumers": the next human mapper that comes along and automated QA tools. > It allows those two data consumers to know that a way that ends close to > another way but is not connected to it is not a mistake. For that purpose > it should be on the node at the end of a way that is very close to but not > touching another way. > > I agree with Martin that if you wish to tag a street sign that says "no > outlet" or "dead end", then put a node where the sign is and tag it with > "traffic_sign=*". > > -Tod > > > > On May 31, 2014, at 3:46 AM, Volker Schmidt wrote: > > This is not so obvious, because it has to be directional (for the router). > If you start your route in such a dead-end street you never get out, if > it's not directional. > The noexit=yes on the way to me seems much simpler and intuitive. > (I used the tag initially in this way, when I started with OSM. I had no > doubt about it's use in this way, until I came across some discussion in a > mailing list) > > > On 31 May 2014 12:04, Martin Koppenhoefer <[email protected]> wrote: > >> >> >> Am 31/mag/2014 um 10:06 schrieb Volker Schmidt <[email protected]>: >> >> But how do I tag a dead-end sign on a road >> (e.g. http://commons.wikimedia.org/wiki/File:Zeichen_357.svg). >> >> >> >> you'd tag it best on a node with traffic_sign=* (e.g. dead_end) >> >> cheers, >> Martin >> >> _______________________________________________ >> Tagging mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/tagging >> >> > _______________________________________________ > Tagging mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/tagging > > > > _______________________________________________ > Tagging mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/tagging > > -- Dave Swarthout Homer, Alaska Chiang Mai, Thailand Travel Blog at http://dswarthout.blogspot.com
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