![]() ![]() : ivĪs part of the modernization of the New York City Subway, the MTA plans to upgrade and automate much of the system with communications-based train control (CBTC) technology, which will automatically start and stop trains. An older system was previously used on all of the A Division, but with the conversion of the IRT Dyre Avenue Line signals to the B Division scheme in September 2017, this system is no longer in use. The current scheme is used on all A Division and B Division lines, originally built to the Brooklyn–Manhattan Transit Corporation (BMT) and Independent Subway System (IND)'s specifications. There have been two different schemes of signaling in the system. ![]() Additionally, some subway lines have reached their train capacity limits and cannot operate extra trains in the current system. Because of the age of the subway system, many replacement parts are unavailable from signaling suppliers and must be custom built for the New York City Transit Authority, which operates the subway. Many portions of the signaling system were installed between the 1930s and 1960s. The system currently uses Automatic Block Signaling, with fixed wayside signals and automatic train stops. Most trains on the New York City Subway are manually operated. A signal in the Flushing–Main Street station ![]()
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January 2023
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