GPetermann_muenchen at hotmail.com
Sun Oct 25 10:44:11 UTC 2015
I do not fully agree here. In Germany, I often see a traffic sign "Vorsicht Düker"
(~ "Attention! Culvert") next to these culverts.
I am not sure why I should pay attention, but it seems that some
people think that the traffic on the road should notify it.
Maybe because it also often means that there is a
barrier=fence along the road.
In fact I thought that these signs are the explanation for the
use of tunnel=culvert on a node.
Von: johnw <johnw at mac.com>
Gesendet: Sonntag, 25. Oktober 2015 11:29
An: Tag discussion, strategy and related tools
Betreff: Re: [Tagging] tunnel=culvert
On Oct 25, 2015, at 6:27 PM, Ineiev <ineiev at gnu.org<mailto:ineiev at gnu.org>> wrote:
In my eyes it is the same case as with a
railway=level_crossing. We map it as a node (and only as a node).
Did I miss something?
In this case, the highway and the railway share the same level.
the rail and road share an intersection. it is a level crossing. The whole point of a level crossing is to say "Hey!" the road and train meet here! that's why they share the node.
a train in a tunnel doesn't - so it doesn't share a node with the road(s) above. There is no notice to a driver of subway lines, storm drains, water pipes, etc in the road as you drive - why is the culvert a node property of the road?
Water and a road sharing the same node on the same level is called a ford.
A culvert is a type of tunnel. Zoom in and make a tiny going across the road and tag it as a culvert.
In general, Tunnels are a property of ways, not nodes.
Occasionally it is not completely sealed (there is a grate, or just rail ties and track), but it none the less has no bearing on the traffic on the track, road, or path above it - so it does not share a node with the road/track above - just as power lines crossing above do not either.
It is not a stream that you have to get your car through.
it is a small tunnel under the road.
So tag it as a way. tunnels on nodes - especially on shared nodes with roads that are not in tunnels seems really really bad.
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