As first reported last June 3:
…. Starting December 2025, the MTA will swap the F and M train routes on weekdays, moving the F to the 53rd Street tunnel and sending the M though 63rd Street tunnel, which means Roosevelt Island riders will board the M during the day but return to the F at night and on weekends. On weekdays from 6:00 am to 9:30 pm the M will run through 63rd Street and stop at Roosevelt Island while the F shifts to 53rd Street, and after 9:30pm and all weekend long the service reverts so the F returns to 63rd Street and the M does not run to Queens.
MTA officials say this will ease congestion at Queens Plaza, cut delays, and reduce crowding on the F, though many worry that having one train serve Roosevelt Island on weekdays and another on nights and weekends will be confusing and leave riders stranded, and there are also questions about whether the M will run often enough to meet local demand….
the F and M Train Swap will start Monday December 8.
Fox 5 New York has more on the F and M Train Swap.
Good luck with our new Roosevelt Island M Train Service.
How’s it going?
So at 9:31 pm the trains will magically swap tunnels? At the change over time how do you know which train to get in?
To my knowledge, there are announcements that say “This is an F train via Court Sq” or “This is an F train via Roosevelt Island.”
https://www.youtube.com/shorts/ZLgaKaqu1QY
Put down your phone and pay attention to the announcement, it’ll tell you.