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Life & fun · November 17, 2015

NXSYS, Signalling and Interlocking Simulator

New York City Subway Signalling and Interlocking Simulator

NXSYS, Signalling and Interlocking Simulator launched on November 17, 2015 with 65 votes, #1,200 of 4,108 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 10 years on.

What it does

Please note! Downloads and documentation of NXSYS, now much improved, are now available on the developer's web site. Available for Windows 10 and MacOS. Click here. NXSYS, New York City Subway Signalling and Interlocking Simulator, A tool and toy and labor of love by Bernard S. Greenberg. NXSYS is an application that recreates for you the experience of controlling switches, signals, and trains in the New York City Subway system. Rather than conventional menus and toolbars, NXSYS presents to you the exact same user interface as so-called "Entrance-Exit" "pushbutton interlockings" present to New York City subway towerpersons, except that instead of pressing buttons with your finger, you click…from nycsubway.org

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