Hi Volker,
the values raised and lowered for a kerb (node) are related to the
vertical gap between sidewalk/crossing and not really to the direction.
Raised means that there is a (more or less) big transition (in the kerb
page [1] it says >3 cm), while lowered means a smaller transition, and
flush no gap at all. All of this regardless of the direction (up or down).
Ale
[1] https://wiki.openstreetmap.org/wiki/Key:kerb
On 11/01/20 11:08, Volker Schmidt wrote:
I do have a related question, regarding the kerb values lowered|raised
on a node.
Assume you find yourself on a pedestrian crossing across a road that
has an adjacent sidewalk and cycleway on the same side.
The main carriageway is separated from the (foot-only) sidewalk by a
kerb and that is separated from the cycleway by another kerb. The
first kerb is typically raised (as the tag refers to a kerb between
the road and the sideway, and the latter is always higher than the
road), but the second kerb (let's assume that the cycle path is
physically higher than the footway) is it kerb=raised (a step upward
from the footwalk to the cycleway) or is it kerb=lowered (a step down
from the cycleway to the sidewalk)? I have come across a number of
these in the same context that Ale mentioned. I fear my conclusion is
that the values "lowered" and "raised" on a node "kerb" need to be
accompanied by direction=forward|backward (like stop and give-way, for
example) with respect to the "crossing" way. I don't like my
conclusion, but it seems inevitable.
(I hope I'm wrong on this last statement)
On Sat, 11 Jan 2020 at 06:49, Alessandro Sarretta
<alessandro.sarre...@gmail.com <mailto:alessandro.sarre...@gmail.com>>
wrote:
Dear all,
I'm doing some work cleaning the edits we've done around Padova
for the local plan for the elimination of architectural barriers
(some references here: https://doi.org/10.5281/zenodo.3370704).
The height of kerbs, in this context defined as the nodes at the
intersection between sidewalks and crossings, is quite an
important element for the evaluation of accessibility of sidewalks
and crossings. I think the agreed tagging system is:
kerb=yes/lowered/raised/flush + kerb:height=<a number><unit>
as described here
https://wiki.openstreetmap.org/wiki/Key:kerb#kerb:height.3D.3Cheight.3E.3Cunit.3E
Around Padova I found some inconsistencies that I'm going to
correct, but I see similar ones around the world and I'd like to
ask you if you think they should be corrected, when found.
Here the questions:
* should the tag barrier=kerb be always avoided in these cases
and deleted when found? (
https://wiki.openstreetmap.org/wiki/Tag:barrier%3Dkerb#Possible_Tagging_Mistakes
)
* is the tag height=* to be always changed into kerb:height=* ?
Thank you,
Ale
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