Question:
I've noticed the red balls hanging on the power
transmission lines, what are they for?
Replies:
Those balls are on the wires so aircraft can see that there are wires
there and avoid them.
Steve Miller
I think they are intended to make the power lines more visible to helicopter
pilots. It's very bad for all concerned if a helicopter gets tangled in a
power line.
NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.