This is in response to your recent e-mail to MTA New York City Transit offering
transit-related suggestions regarding F and V service.We appreciate your
interest in improving mass transit, and thank you for your suggestion. We
have forwarded your e-mail to supervision in the appropriate operating
department for review. However, please note that express service on the F or V
line and extending V line service into Brooklyn will not be possible until
completion of the Culver Viaduct Rehabilitation project in 2012. MTA New
York City Transit intends to examine F express service and V line options for
possible implementation after the completion of the viaduct rehabilitation.If
you have any further transit-related questions, concerns or suggestions, please
contact Customer Services at (718) 330-3322, Monday through Friday, from 9:00
a.m. to 5:00 p.m., or write to Customer Services at 2 Broadway, Room A11.146,
New York, NY 10004.We take the concerns of our customers very seriously
and thank you for your interest in our transportation system
The F line has a Wikipedia entry that is informative. Apparently not only the rehabilitation project but also damage from a signal fire at Bergen Street are our obstacles to restoring express service.
KensingtonBrooklyn has posted extensively on the F line's shortcomings. I enjoyed the comment thread attached to this post.