Actually this contraption which you’ll find at the Union Square subway station is a device for testing the quality of air in the subway. It was fun trying to think about various different things it could’ve been though. I think most people suspect it’s some sort of video monitoring or security device in the subway.
Huh, so it’s for the air quality. I always wondered what those things were for. Finally, reading webcomics pays off!
though from reading this comic my understanding is that the air in ny subways is putrid. @__@
It’s different station to station. Usually the worst problem I have with the air in subways is lack of circulation which is a problem during scorching hot summers.