What is the function of the orange tube/cylinder atop some lampposts?
August 18, 2004 6:32 PM
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What is the function of the orange tube/cylinder atop some lampposts? I see them every few street corners; the other lampposts usually have a little orange bubble on top. I'm guessing those are to let aircrafts know that they are above an urban area. The orange cylinders are about six or more inches high, and I'm very curious to know what they are for.
posted by riffola to grab bag (6 comments total)
posted by pwb503 at 6:57 PM on August 18, 2004