https://www.reddit.com/r/whatisthisthing/comments/2b2fem/these_red_tags_on_utility_poles/
Rotting wooden pole not safe to climb with spikes
They did seem to have mounted it "upside-down"…
http://poles.com/epages/08fd78c5-abfa-4217-9263-68fec9605ccc.sf/en_US/?ObjectPath=/Shops/08fd78c5-abfa-4217-9263-68fec9605ccc/Categories/Products/4/18
PoleAnon (?!)