[Tagging] Non Proposed Features

Pierre-Alain Dorange pdorange at mac.com
Mon Aug 30 21:35:33 BST 2010


Nathan Edgars II <neroute2 at gmail.com>
wrote:

> > That's true, but IMHO the "wrong" way is tagged there: the culvert
> > should go on the waterway, i.e. where it is.
> What do you mean by "where it is"? The culvert is the structure that
> carries the road over the waterway.

I'm not sure i have understand, but (for me) a culvert can't "carries a
road over" ; a culvert is a kind of tube that goes under a structure to
allow water to go throught a roadrail...

Wikipedia for example tell :
"A culvert is a device used to channel water. It may be used to allow
water to pass underneath a road, railway, or embankment for example.
Culverts can be made of many different materials; steel, polyvinyl
chloride (PVC) and concrete are the most common."
<http://en.wikipedia.org/wiki/Culvert>

What you describ "a structure that carry the road over" is a bridge for
me.

> > I also saw another strange thing there: your waterways are tagged
> > oneway=yes. What does that mean? Is this for boat-traffic? Do the
> > boats pass the culvert? According to the wiki oneway is used for
> > access-restrictions, i.e. it is a legal tag, not a physical one.
> How else would you tag water flow?

Water flow is the way direction (the direction it has been drawn, if
opposite, reverse the way).
oneway=yes do not indicate any direction just that there is only one
direction possible, the direction is indicate by the direction of the
original drawing.

<http://wiki.openstreetmap.org/wiki/Tag:waterway%3Driver>
"Direction of the way should be downstream."

oneway tag is design to indicat access restriction.
<http://wiki.openstreetmap.org/wiki/Oneway>
-- 
Pierre-Alain Dorange




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