[Tagging] [OSM-talk] OpenRailwayMap Electrification Status vs tag electrification=no

[Niels Elgaard Larsen]

Martin Koppenhoefer:
> Am Mi., 23. Feb. 2022 um 18:35 Uhr schrieb Niels Elgaard Larsen <elgaard at agol.dk 
> <mailto:elgaard at agol.dk>>:
> 
>     john whelan:
>       > So it comes down to who adds the tags.  Manually by local mappers is
>     acceptable but
>       > remote mappers from imagery is not?
>     In principle I have no problem with remote mappers, if the imagery is good enough to
>     see lighting.
> 
> 
> 
> I always thought "lit" is telling whether a street is lit at night, not whether there 
> are lighting devices. It is not unheard that municipalities turn the lights off on 
> purpose, e.g. to reduce light pollution

That would be lit=disused then.


In Denmark the area around the old Brorfelde observatory is mostly unlit to avoid 
light pollution. But there are no lamps that are never turned on.

There are a few places (E.g, Brønderslev) that at least used to reduce the light by 
e.g., turning 2/3 off between 22:30-06:30 or turning them off in June-July.

But they are now replacing the light sources with LED lights.

Some of the LED lights, also in Copenhagen, are turned on by a combination of light 
sensors and motion detectors.

So they should be lit=automatic. But that is difficult to tag in Copenhagen based on 
ground observations because even if you do not set it on yourself, there are usually 
so much traffic that the light are on most of the time.
There is a street close to where I live that I know has automatic light because it 
would not turn on if I was on bicycle and there were no cars around. But they fixed 
that now.

I am suspicious of all the roads tagged by "lit=sunset-sunrise".

I doubt that anyone waited there for many hours to verify it. And many of them 
probably operate on light sensors and might deviate from strictly sunset-sunrise.


>, maybe only in a part of the settlement. Have 
> seen this for example on the Ventotene island.


-- 
Niels Elgaard Larsen