Relations are a super-powerful tool and permit all kinds of whizziness (cycle routes, bus routes, areas with holes, dual carriageways, etc.). This much we know.
On looking through the latest UK planet excerpt, though, I note a handful of cases where they're being used for simple road refs. So there are route relations which have simply been set up to convey ref=A813, etc. Could I 'umbly suggest not doing this unless there's very good reason? In the UK, road numbers are unique (apart from about three cases where local councils have cocked up, e.g. the B4027) and no road can have more than one ref. The relation doesn't give any info over and above that in the standard 'ref' tags - it just increases complexity for both editing and processing. cheers Richard _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
