this post was submitted on 03 Apr 2026
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What is this thing?

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They were on all of them in the intersection, four sets

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[–] Threeme2189@sh.itjust.works 11 points 5 hours ago

They're the answer to truck nuts. Traffic light ovaries.

[–] Treczoks@lemmy.world 12 points 5 hours ago (1 children)

My guess is that those are weights installed as a vibration damper. That explains the chains with which they are secured, and the box with the antenna, which would then record the results of this installation.

Does that traffic light happen to be in a rather windy area, and were those traffic lights swinging madly during storms?

[–] hereiamagain@sh.itjust.works 2 points 47 minutes ago

Not sure, saw them on a road trip through Ohio

[–] pastermil@sh.itjust.works 14 points 7 hours ago

That's how they make new traffic lights.

[–] Rivalarrival@lemmy.today 247 points 13 hours ago* (last edited 13 hours ago) (4 children)

Stockbridge Damper.

Basically, it keeps the pole from vibrating like a guitar string. The chains are there in case the supporting rod breaks; they keep the heavy weight from going through your windshield.

[–] onnekas@sopuli.xyz 3 points 5 hours ago (2 children)

If vibrating like a guitar string is so bad then tell me why we don't install those things on guitar strings!?

[–] Rivalarrival@lemmy.today 5 points 5 hours ago

If you attached six of those dampers to a guitar, it would weigh about 240lbs.

[–] Michal@programming.dev 1 points 5 hours ago

Because one is installed on a guitar and the other one is not

[–] hereiamagain@sh.itjust.works 39 points 13 hours ago (1 children)

Well I'll be! That seems right!

[–] Rivalarrival@lemmy.today 39 points 13 hours ago (2 children)

I've only ever seen them on electric wires, but I've seen light poles develop some pretty severe Aeroelastic flutter. This seems like a good way to (possibly) prevent it.

Basically, it keeps the pole from vibrating like a guitar string.

"Hey Periphery I got a new guitar for you"🤘👿🤘

[–] gws@programming.dev 6 points 10 hours ago* (last edited 10 hours ago)

I guessed right ^_^

[–] SillyDude@lemmy.zip 8 points 8 hours ago (2 children)

What's the big square antenna thing? Looks like a pretty beefy RF thingy. I've seen them on traffic lights and just by themselves. Are they detecting just the presence of big metal objects? Are they doing long range RFID?

[–] Dust0741@lemmy.world 8 points 8 hours ago

Radar!

Almost definitely a wavetronix

pretty beefy RF thingy

Jesus Christ! NSFW warning, thanks!

[–] swicano@slrpnk.net 35 points 12 hours ago (2 children)

I wonder if it's a weight to change the resonance frequency cause it was wobbling too much. Or it's the charging ports for the govt birds

[–] vivi@slrpnk.net 9 points 9 hours ago* (last edited 9 hours ago) (1 children)
[–] vivi@slrpnk.net 5 points 9 hours ago

aside, I used Lens to look up similar images, and that worked, but the associated LLM made up a completely different purpose and name for them 🤦‍♀️

[–] RePsyche@lemmy.world 15 points 11 hours ago

Bird recharge port, the cap comes off, they get inside to charge, software updates, etc. Yep.

[–] toiletobserver@lemmy.world 47 points 13 hours ago (1 children)

Traffic light pole truck nuts

[–] derek 4 points 7 hours ago* (last edited 7 hours ago)

Pole nuts, as it were.

[–] edgemaster72@lemmy.world 2 points 7 hours ago (1 children)

The one on the left is named Dingle McDangle, and the one on the right is named Jingle Bojangle

[–] Asfalttikyntaja@sopuli.xyz 1 points 5 hours ago

And their dad is Mister Bojangles.

[–] finallymadeanaccount@lemmy.world -1 points 4 hours ago

Light Nuts. They got jealous when they saw truck nuts and, well ...

[–] ryannathans@aussie.zone 14 points 11 hours ago

That's where the pee is stored

[–] aramis87@fedia.io 7 points 10 hours ago

Very old shot spotters?

[–] bhamlin@lemmy.world 13 points 13 hours ago

Those are males

[–] DarrinBrunner@lemmy.world 8 points 13 hours ago (1 children)

It's a lamp post. Did you expect a scrotum sack, Michael?

[–] Zachariah@lemmy.world 12 points 12 hours ago (1 children)
[–] elephantium@lemmy.world 2 points 6 hours ago

I haven't seen that toaster model before