Monday is back with a vengeance in the NYC subway system, with the MTA reporting 'extensive' delays on the B, D, Q, E, M, and F lines. Commuters stuck seething underground are describing the delays as 'massive,' 'shitty,' and 'annoying!'

The MTA says the source of this morning's problems is twofold: a sick passenger at Rockefeller Center, and signal problems at Broadway-Lafayette causing extensive delays on the B and D lines, forcing the suspension of M train service in both directions between Delancey Street and Forest Hills-71 Ave.

Yep it’s going to be another shitty MTA morning on the F Train — Sohrab Andaz (@SohrabAndaz) September 17, 2018 The conductor said the f train is going over the bridge, what bridge? What does that mean??? Where the hell is he taking me? @MTA @NYCTSubway — Anthony Guerra (@Spicy_Boom_Boom) September 17, 2018 If I was able to fight a train, it will definitely be the F train — Lin (@lovelyyylin) September 17, 2018

One frustrated commuter from Park Slope tells us, "An F train just dumped its entire load of passengers on Monday rush hour off at 4th-9th, not because anything was wrong with the train... but due to 'delays along the F line.' Not sure how stranding a whole bunch of passages helps that. Next F train is eight minutes away, with the next one after that eighteen minutes away!

"The platform is basically flooded with people who are not getting off for at least a half hour. What happen to going express when there was delays and/or congestion? I’m guessing that was a dumb excuse."

A rush hour F train just dumped everyone off at 4th-9th. pic.twitter.com/9LygdLzM18 — aaron 🚩 petcoff (@ughitsaaron) September 17, 2018

The signal problems also forced northbound F trains to be rerouted along the G line from Bergen Street to Court Sq, then over the E line to Jackson Hts-Roosevelt Av. Some F trains also wound up on the N line, apparently:

The F train is now running on the N line right in the middle of manhattan, what in the actual fuck? Skipping my stop and completely putting me even further from my destination.@MTA — HelgenX (@HelgenX) September 17, 2018 Southbound M trains are running on the E line from 5 Av-53 St to W 4 St-Washington Sq because of a customer in need of medical assistance at 47-50 Sts-Rockefeller Ctr.



Expect delays on E, F and M trains. — NYCT Subway (@NYCTSubway) September 17, 2018

There's now a third source of F (and E) train delays: At 8:35 the MTA announced that southbound E and F trains are running with delays because a train's brakes were automatically activated at 36 Street in Queens.

@NYCTSubway why are you no longer reporting delays on the F? A train just passed 4th Ave 9th St and it was too full to get on. There's no F uptown showing on the subway time. — Lia (@tinychefeats) September 17, 2018

The problems seem to be causing ripple effects on other subway lines:

Update - on an r train that’s gone about 6 stops in 40 minutes. Only then did we can get an announcement from crew about “congestion”. @NYCTSubway #MTA — Pete Catapano (@pcatapano) September 17, 2018 But: the Q was doing fine until the R and and B both had to be diverted to the Q line. Fairly certain that's what screwed up the Q this AM. — Aaron W. Gordon (@A_W_Gordon) September 17, 2018

Oh, and this just in; delays on the 2 and 3 line:

Southbound 2 and 3 trains are running with delays because someone is in need of medical assistance at Atlantic Av-Barclay Ctr. — NYCT Subway (@NYCTSubway) September 17, 2018

Honesty, I've tried to publish this subway shitshow report three times during the past twenty minutes, but each time there's been a new problem I need to add to this morning's litany of misery. So refresh often for updates!

@MTA ...what's up with F & M train going into the city!?!?!. Major delays!!!! U knew Monday was happening..happens every week..why not prep for it!?!? #usuckmta #onthem #mondaysucks #MTA — Giselle (@babygirl707070) September 17, 2018 This is a well-designed mass-transit system, without which NYC simply can't work. It's horrifying to see the state to which it's been reduced. — Robert Wright (@RKWinvisibleman) September 17, 2018

As for the signal problems at Broadway-Lafayette, the MTA says work crews "are on the scene making repairs and we hope to resume normal service soon."