Aerial marker Balls are used for safety.
It saves lives and infrastructure by making guy wire and power lines (Transmission, distribution and communication lines) visible to the low flying helicopters, aircraft and plans according to the Federal Aviation Administration(FFA ).
Some power lines marker balls glow due to electric field on the power lines.
In some cases, flashing marker balls are used on transmission poles, towers and power lines for clear visibility.
The power lines conductors and skyline become almost invisible against the terrain as the human eye start to loos its visual acuity at just a few degrees off dead center.
Other reasons to unable to notice the power lines for pilots are light condition and dirty windscreens etc.
Marker balls are colorful, spherical markers placed on power lines for the safety of low flying aircraft and to protect the electrical infrastructure.
They allow the electrical wires to be noticeable (especially during times of low visibility or inclement weather) thanks to their bold colors.
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