Metro-North Railroad rolling stock

It principally uses a fleet of electric railcars for its services; diesel locomotives and push-pull coaches are in use as well for non-electrified portions of the system.

[2] (2 units) In December 2020, the Metro-North board approved a Federal Transit Administration funded $334.9 million contract for Siemens to manufacture and test 19 dual-mode locomotives with an option for an additional eight more.

These dual modes would be able to work on both Amtrak and Metro-North signal systems and will be able to sustain 110 miles per hour (180 km/h) in service.

[4][5] The first pair of locomotives were delivered in October 2024 and were expected to enter service in early 2025, with deliveries to continue through 2027.

[11] In June 2018, Metro-North announced that they would elect to not exercise their options for the M9 order, instead overhauling their M3A units to extend their lifespan.

[12] However, that November, Metro-North stated that they "are working with LIRR to procure 170 new M9A cars in the next Capital Program to provide additional capacity and replace M3As.

[14] However, the idea was abandoned due to cost and train capacity concerns, as well as Metro-North not being willing to handle the bar themselves, wishing for an outside company to run the operation itself.