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Overhead wire markers are safety instruments applied to the Marking of Army airfield-heliport operational and maintenance facilities - 7-9 Markers
page 7-6 Markers are often installed on overhead lines near airfields, or at river crossings where there is a possibility of
overhead power line
An overhead power line is a structure used in electric power transmission and distribution to transmit electrical energy along large distances. It consists of one or more conductors (commonly multiples of three) suspended by towers or poles. ...
s marking transmission lines and ropeways along the flight path during the day.page 7-6 Markers are often installed on overhead lines near airfields, or at river crossings where there is a possibility of
seaplane
A seaplane is a powered fixed-wing aircraft capable of takeoff, taking off and water landing, landing (alighting) on water.Gunston, "The Cambridge Aerospace Dictionary", 2009. Seaplanes are usually divided into two categories based on their tech ...
s using the river. Some markers contain conductor marking lights or strobe lights to improve visibility at night or in fog.
See also
* BalisorNotes and references
{{Commons category, Overhead wire markers Electric power distribution Aviation safety