On 07-Mar-18 04:00 AM, NKA mapper wrote:
This is a request for comments on a new feature for /aviation obstacle
lights <https://en.wikipedia.org/wiki/Aircraft_warning_lights>/:
https://wiki.openstreetmap.org/wiki/Proposed_features/Aviation_Obstacle_Light
<https://wiki.openstreetmap.org/wiki/Proposed_features/Aviation_Obstacle_Light>
I am planning an import of mobile/cell towers in Norway. The dataset
is based on a public database for obstacles to aircrafts, containing
all vertical structures above a certain height. The dataset also
contains information on warning lights on those structures, such as
"flashing red light" or "low intensity ICAO type A light". There are
similar datasets available in the US and elsewhere. I was unable to
find a way to tag the lights and therefore I am proposing the new
feature /*airmark=obstacle_light*/.
The obstacle is not the light, but the light is used to mark it.
Perhaps air_obstacle=tower/line (thinking of power and communication
lines as well as towers)
If you want to identify air obstacles, if you only want to identify
those obstacles that have identifiers then
Some of these have lights, some have no lights. Some lines have soccer
ball things in bright colours.
For that maybe airmark:light=yes/flashing_red/* airmark:ball=red/*
I did consider the proposed /light_source=*/ feature, however it was
not possible to tag dual day/night warning lights, such as "high
intensity flashing white light at daytime/low intensity flashing red
light at nighttime". Also, for high light masts (at for example
stadiums), bridges, certain towers etc there was anyway a need to tag
the main light on the structure and the warning light separately.
conditional tagging could be used ..
light_source:conditional=high intensity flashing white
light@sunrise-sunset:low intensity flashing red light@sunset-sunrise
https://wiki.openstreetmap.org/wiki/Conditional_restrictions
The proposal is based on how obstacle lights are coded by ICAO, FAA
and other national aviation regulators. The tagging structure is built
on concepts from the /seamark:light/ tags and it is kept as general as
possible in order to be reusable for other kinds of aviation lights
such as aerodrome beacons
<https://en.wikipedia.org/wiki/Aerodrome_beacon>.
I have no experience with flight simulators, which could be one of the
use cases for this tag, so I am particularly interested in comments
from the flight simulator and aviation communities.
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