Re: [Tagging] oneway=no spams

2014-12-28 Thread Ole Nielsen / osm
 I notice a quicky increasing number of oneway=no tags on roads, probably
 due
 to editors offering some flashy list box for the oneway key. I wonder
 what's
 next. bridge=no, tunnel=no...?

 I find these information-less tags annoying, because you have to browse a
 long list of bogus tags on each object to finally spot the one or two tags
 that actually matter.

It depends. Sometimes it is useful to add this tag. I typically add it to
bidirectional cycle paths along roads as you would normally expect such
cycleways to be oneway. Adding a oneway=no indicates that it has been
surveyed and found to be bidirectional and will further prevent eager
mappers adding the missing oneway=yes tag to this cycleway.

But I agree that it is silly to add it to all highways in general. I
occasionally see highways having long lists of obvious *=yes access tags
(and some silly *=no as well such as boat=no on a highway=trunk!).


 I think that those editors should only make undefined, yes and -1
 selectable, or omit the no values on upload at last, except for
 motorways,
 motorway_links and roundabouts.

A roundabout with oneway=no is not a roundabout, just a circular road.



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Re: [Tagging] Cycle lane tagging

2014-08-02 Thread Ole Nielsen / osm
 Questions regarding correct cycle lane tagging.

 Regarding a situation like http://wiki.openstreetmap.org/wiki/Bicycle
 M3a:

 a) How do I tag the width of the cycle lane?

 b) How do I tag an arrangement like M3a where the lane is signposted as
 non-segregated foot and cycle use?

 Do I need to use lanes tagging for this, which is completely different
 form
 the cycle lane tagging?

See here how to do it

http://wiki.openstreetmap.org/wiki/Key:surface#Surface_for_foot-_and_cycleways


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Re: [Tagging] Substation proposal approved - and a suggestion for a post-vote change

2013-10-13 Thread Ole Nielsen / osm
 2013/10/12 Martin Koppenhoefer dieterdre...@gmail.com

 2013/10/12 Ole Nielsen / osm on-...@xs4all.nl

 I propose to change the meaning of substation=distribution to be used
 only on substations at the last level of voltage transforming, thus the
 small street-level transformer kiosks etc supplied with medium voltage
 (typically 10-30 kV) and delivering low voltage power to households and
 small businesses.

 definitely +1

 IMHO the IEC are right with defining everything below 100kV as
 distribution, I wouldn't use this given term with a different meaning.

 I don't agree.

 Imagine you find several 90 kV and 63 kV lines in such a substation
 connected with busbars.
 Then, the operator can use this stuff to make power transit between lines
 of a given power level and use transformers to transit between both 90 kV
 and 63 kV.

 That's transmission and not distribution obviously and it's below 100 kV.

 Furthermore, we can't qualify of distribution voltage levels which
 accept
 industrial client feeding : CERN is connected to French 400 kV (and I hope
 everyone will agree 400 kV isn't distribution).

I surely wouldn't associate CERN with distribution. They may have their
own internal industrial distribution network but substation=industrial
is more appropriate for such internal facilities.

The idea behind transmission and distribution is to provide data
consumers a hint about the role of the substation without having to look
for the voltage tag (which may be missing or having multiple ;-separated
values). The 100 kV specified threshold is only a guideline and if the
mapper think that a 70 kV substation is mainly for transmission then it
may be indicated as such. Another example: 132/10 kV substations are not
uncommon in Denmark and they seem most appropriately to be considered
distribution stations.

Of course we are here talking about the final substations *for households
and small businesses* only being connected at the low voltage level, not
those feeding larger industrial customers at a higher voltage level.

I'm open to suggestions for alternatives to distribution. Martin
suggested local_distribution which is a bit long but otherwise a
possibility. Some other ideas: local or minor?. I am just looking for
a way to clearly distinguish those low voltage substations from other
substations.

BTW, transformer=distribution is currently defined as meaning a
transformer supplying low voltage!

Ole



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[Tagging] Substation proposal approved - and a suggestion for a post-vote change

2013-10-12 Thread Ole Nielsen / osm
The substation refinement proposal has been approved by a large majority
of voters. The new feature page can be found here
http://wiki.openstreetmap.org/wiki/Tag:power%3Dsubstation

Afterwards I regret a bit that I didn't reserve a dedicated value in the
substation=* tag for the small street level substations (Trafohäuschen in
German). I used the IEC definitions that suggest that anything below 100
kV or so should be considered 'distribution'. It may have been better to
define this value only to cover the last level of transformation from
medium voltage to low voltage supplied to household customers. This would
address the concerns of some mappers, especially in central Europe, that
used the old station vs sub_station to distinguish this.

I propose to change the meaning of substation=distribution to be used
only on substations at the last level of voltage transforming, thus the
small street-level transformer kiosks etc supplied with medium voltage
(typically 10-30 kV) and delivering low voltage power to households and
small businesses. A small substation would then be tagged as
power=substation and substation=distribution. Mappers could then
unambiguously tag such facilities without having to know the actual
voltage(s) employed in a given area. Tagging the voltage is still
recommended, though.

I would like to have opinions on this. If this change is made some
substations at the 'second level' such as 60/10 kV now tagged as
'distribution' should have this tag removed. The current suggestion that
small kiosk substations may be tagged as 'power=transformer' will then be
removed to avoid any confusion. Only pole mounted transformers will keep
their own tagging scheme (power=pole, transformer=yes/distribution).

Ole N




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Re: [Tagging] Is the difference between power station and sub station clear?

2013-01-25 Thread Ole Nielsen / osm
 On 21.01.2013 01:54, François Lacombe wrote:
 May someone answers that question

 power=station is used for large, fenced areas where high voltage is
 transformed to medium voltage. In German: Umspannwerk

 power=sub_station is used for smaller objects, like buildings with 2m each
 side and a height of a few m, where medium voltage is transformed to low
 voltage. In German: Trafohäuschen (or Trafostation)

That is a misunderstanding that was unfortunately introduced in the early
days of OSM. The creator of the 'station' tag, Bahnpirat, has admitted it
was a mistake, see
http://wiki.openstreetmap.org/wiki/Power_lines#RFC_-_draft. In English as
substation is a substation never a 'station'. A 'power station' in English
is the same as a power plant! This leads to confusion among mappers
resulting in quite a few power plants tagged as 'stations' according to my
experience.

I have seen a lot of small 'Trafohäuschens' tagged as 'station'
(especially in the Netherlands) so the distinction is not that clear to
mappers. Using voltage=* to indicate the catagory of substation is much
better.

 No, it was rejected. It did not get enough votes.

The start of voting was never properly announced on this list. Maybe that
could explain the few votes. I only discovered the voting by accident.
Maybe it should be revived for a new vote?


 Maybe. Spelling errors have been corrected in other cases too (e.g.
 type=broad_leafed).

We are all aware that that underscore is wrong but it is quite difficult
to get rid of it since 'substation' is currently not supported by
renderers and editors. 'broad_leafed' was easier as none of the mainstream
renderers are rendering it anyway, AFAIK.

 This is a consensus among 2 persons at best. This does not legitimate you
 to
 make vast changes to the Wiki. There should at least be a topic in the
 wiki
 talk page for some months.

Discussions about tagging are supposed to take place here, not on 'talk'.


 And first of all you should contact user aliponte who did a lot of work
 mapping power networks in central Europe.

 Do everyone agree with that?

 No, I disagree.

 On 24.01.2013 22:46, Ole Nielsen wrote:
 I have now marked http://wiki.openstreetmap.org/wiki/Tag:power%3Dstation
 as
 deprecated, removed 'power=station' from the power features template
 meaning it's gone from all language versions of Map Features using the
 template and removed links from a few feature pages.

 This is really bad. Please revert these changes immediately. Otherwise
 I'll
 do it, but I am afraid that I would miss some of the affected pages.

I think you should first justify why 'station' is a correct tag (i.e. a
substation and not a power station).

Ole



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Re: [Tagging] Everybody is hiding?

2012-08-09 Thread Ole Nielsen / osm
 Hi tagging list,

 the Extended Conditions proposal has been shot down by a majority, and
 therefore there is still no official way of tagging quite a lot of
 things. (As a side note, the Extended Conditions proposal is still the de
 facto standard.)

 Therefore, I expected that those people who had voted against the proposal
 came up with a well-designed alternative proposal – yet nothing
 happened. Shall I conclude that all those people who voted against the
 proposal did this just for the sake of voting against?

First of all I actually approved the proposal but later realized that
having variable keys is less than ideal. I am currently working on an
alternative proposal and I was planning to announce it within a few days
(I have only limited internet access the next couple of days).

But here it is.

http://wiki.openstreetmap.org/wiki/Proposed_features/Conditional_restrictions

A short comment on the proposal: The actual conditions go into the tag
value. The transport mode (vehicle catagory) and the direction stay in the
key in accordance with current practice for access restrictions.

Feel free to comment on it, preferably on the talk page.

Ole / polderrunner




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