Balisor
Videos
Balisor is a system of illuminated beacons for high voltage power lines using a cold-cathode low-pressure neon lamp, used as an aircraft warning light.
Photograph showing Balisor beacons in use on high voltage cables
Overhead wire marker
Videos
Overhead wire markers are safety instruments applied to the overhead power lines marking transmission lines and ropeways along the flight path during the day.
A spherical marker. Spherical markers are also known as aerial marker balls.
Markers on a line near an airfield
An overhead line obstruction warning marker near an airstrip.