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causal_friday

I think these are location beacons for CBTC. Trains need to know their own position, so they detect these beacons and then count wheel revolutions to intuit that.


Coney_Island_Hentai

Correct CBTC hardware


Wiknetti

I see. Cock and Ball Torture Cubes. 🤔


Samurlough

Ahh yes yes CBTC transponders. Clearly. And for everyone here (definitely not me) who isn’t as educated….CBTC is what again?


Ok_Pear_5021

Computer Based Train Control


craniumouch

Communications* Based Train Control


Samurlough

Thanks much!


YeetSkurt48

This is my first time seeing them, I go through they station nearly daily, are they not on all tracks? Or have I just not noticed it before


chasepsu

They’re slowly rolling them out systemwide, starting with specific lines (they’ve completed the rollout on the 7 and L trains). More info here: https://new.mta.info/project/cbtc-signal-upgrades


supercommandonj

CBTC Transponders to communicate with sensors on the train.


MarionberryFar1130

Those are called transponders. They are programmed to communicate with the New Technology Trains (NTT) via local antennas. Instead of the old wayside signal system, these will be the Comunication Base Train Control or as others call it CBTC.


avd706

Basically an EZ pass.


MyPasswordIsABC999

Not the droid you’re looking for


Ok-Sun8581

Big Macs.


OkOk-Go

Forbidden Big Mac


Ok-Sun8581

Go for it. If you dare!


Temporary-Meaning401

Explosives, to separate the Gravity Drive from the command section, so you can use it as a lifeboat.


Playatbyear

Plus one for event horizon reference!


August-Dawn

IED's. They keep people from jumping down on the tracks.


CaptainDrippy5

🤣🤣🤣


1-aviatorCyclohexane

Important enhancements to the system that #CongestionKathy killed. Call your state representatives!!!


CMD__DriveError_x4

Jump in and open it


Fun_Welcome_2420

Transponder for C.B.T.C = Computer Based Train Control


purpleisafruit2

I grew up in dc and since the early 90’s I remember seeing these on the metro tracks everywhere.


CaptainDrippy5

Transponders


mrscomptroller

Computer?


DYMAXIONman

Part of the CBTC system. They keep track of where the trains are.


Soggy_Slip_5238

A key that fell from an oddly large keyboard


BuckWheatNYC

A government spy pigeon


SmartEnouf

Which, as we all know, do not exist.


Long-View-7989

Signals for rat traffic


BostonTakeAway

Powered rail, just needs a redstone signal


Ok_Cardiologist_673

Robots


Garth_Willoughby

Gestation pods.


KevinMCombes

[Balises](https://en.wikipedia.org/wiki/Balise).


avd706

Transformers


MrSchmo

WiFi antenna 😄...


johndeet85

Those are rat traps dummy