This door problem happen at 14st union square when they took it out of service becuase the door wouldnt close so as you could see this train is going to east new york yard to get worked on!
I guess I'm in nostalgia mode as I grew up in NY back in the day, but I find it Interesting that even with today's state of the art subway trains, they still come with the same sounding horns that the classic R-10 thru R36 cars had back in the 1970s. Cool touch.
If you go to 0:33 and pause it you can see the worker trying to get the door to close.Sometimes On the (1) Line i see many trains with the light on and the door open