A Trip To The Loop: Metro-North Railroad/Siemens SC42-DM Testing In Grand Central Terminal. On the night of March 24, 2025, MTA Metro-North Railroad/Siemens SC42-DM MNCW 301 successfully in Grand Central Terminal (the first Siemens Charger to visit this location), completing its initial clearance testing of the MNR system after going to every terminal. Though similar to the all diesel design of the SC-44 and ALC-42, these locomotives also had to go to the testing center in Pueblo, Colorado for full evaluation before delivery to Metro-North. The locomotives are much quieter than their predecessors, and also significantly more fuel efficient while providing more power. While the (present) GE P32AC-DM fleet changes from electric to diesel mode around the Harlem-125 Street Station, MNR has stated that this locomotive is designed to operate on third rail to the Croton Harmon area, where electrification ends. Other testing still needs to be completed prior to these locomotives entering revenue service.
With three lines radiating north out of Grand Central Terminal plus service to Port Jervis on the former Erie, Metro North covers a wide swatch of New York's northern suburbs with varying terrains.
