Communication-based train control (or CBTC) drastically improves transit service reliability. The link in this post details how it works, how it benefits customers, and where it is installed in the MTA system.
The picture depicts what’s next for the signaling modernization project: MTA is expanding CBTC to more sections of the A/C/F lines! This will be made possible according to an amendment to the 2020-2024 Capital Plan, allowing MTA to focus on reliability & equity in serving the commuters.