[Talk-GB] Road route relations in the UK

[Gregory Williams]

> -----Original Message-----
> From: SomeoneElse [mailto:lists at mail.atownsend.org.uk]
> Sent: 2 June 2011 00:56
> To: talk-gb at openstreetmap.org
> Subject: [Talk-GB] Road route relations in the UK
> 
> When looking at a bit of the A1:
> http://www.openstreetmap.org/browse/way/34158443
> I happened to notice that it seems to belong to 6 route relations.
> 
> There's a bus route, an E road (both of which make sense) and 4 A1s
> (which don't), one of which (103597) seems to have a lot more versions
> than the others.
> 
> I have two questions:
> 
> 1) Why the need for 4 A1 route relations?

I haven't checked, but perhaps the number of members exceeds the limit for a
single relation (2000 members IIRC). Certainly that's why National Cycle
Route 1 is split across four separate relations. The A1 is a pretty lengthy
route and I can imagine that with all of the bridges along it it'll need
quite a few ways, especially when you consider that much of it is dual
carriageway.

Gregory