On Thu, 21 Aug 2014 19:20:06 +0100 "Dave F." <dave...@madasafish.com> wrote: > http://ra.osmsurround.org/analyzeRelation?relationId=18159&_noCache=on > > This route relation appears to be just for the B3070. Isn't that a > waste of time as it's covered by the ref tags on the ways? > > I thought route relations were a way to allow tagging of journeys > taken over numerous types of ways. Any reason why I shouldn't delete > it?
IIRC route=road relations were suggested to fix the problem of multiplexing (two or more numbered routes sharing the same physical road). In this instance the B3070 appears to be a route between Wareham and Lulworth Cove which multiplexes with the A352 at Worgret Hill. Simply doing an Overpass query for ref=B3070 would be insufficient to return all of the ways required to traverse the route from start to finish, hence the need for a relation. Ironically the the only section currently missing from the relation (the A352) is the bit that makes the relation necessary! -- Regards, Andy Street _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
