Here's the first couple grafs from an MTA news release from October:
The Metropolitan Transportation Authority (MTA) today announced preliminary findings of the Train Speed and Safety Task Force that demonstrate subway train speeds on certain sections of track can be increased by as much as 50 percent. The task force initiated a study with engineering firm STV, with the help of Transport Workers Union, that remains ongoing but has already determined four core areas of focus that would lead to faster trains while prioritizing customer and employee safety.
The task force’s initial work examined stretches of track from 14 St to 34 St-Penn Station on the Seventh Avenue lines and in Manhattan to the 34 St-Hudson Yards terminal of the Flushing line. The task force determined the following areas of focus to identify tracks where speeds could be safely raised: Reducing running times through straight tracks and interlockings, improving running times through curves, alleviating bottlenecks and fine-tuning schedules to optimize train movement, and updating speed signage to increase train operator confidence.
Here is the full release:
mta news release
David