After commuters on the L and B/D (as well as N/Q/R/W) lines had to deal with breakdowns and commuting delays last night, this evening's commute brings delays on the F, D, G and N lines.
Apparently a signal problem at 4th Avenue-9th Street Station in Brooklyn is causing the F to be shut between West 4th Street-Washington Square Station and the Church Avenue Station in both directions. The F then runs on the D and N lines, bypassing the Lower East Side, downtown Brooklyn, Carroll Gardens, and Park Slope. Oh, and there are delays expected on the G, besides the F, D, and N.
Here's the MTA Service Alert. Good luck!