[Tagging] layer=-1, rivers, bridges and tunnels
pieren3 at gmail.com
Fri Mar 14 15:51:18 UTC 2014
On Fri, Mar 14, 2014 at 4:45 PM, Richard Z. <ricoz.osm at gmail.com> wrote:
> in theory yes. However "nearby" is a problem as rivers can be very long.
> Many people simply tag rivers with layer=-1 without even thinking about
> the fact that the rivers may now collide with tunnels some hundreds of miles
In general, we should avoid single ways running over hundreds of
miles. And we have QA tools to detect such issues.
> Furthermore there is a convention that if there is a crossing with a bridge,
> the bridge should have the layer tag and not the way bellow it. Similar tunnel.
> For both tunnels and bridges layer is now considered mandatory thus it is
> totally useless to put rivers at layer=-1 unless they are in a tunnel.
Who decided this and where ? The wiki about bridge says "Bridges
should have a layer=*, ". "should" is not "must".
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