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NXSYS Subway Simulator
NXSYS is an application for modern versions of Microsoft® Windows® 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 with the mouse. And instead of commanding real trains full of people, NXSYS simulates them cybernetically. You see the same display, get the same options and responses, must learn the same skills, and may enjoy the same pleasures as a towerperson at an "entrance-exit" interlocking.
There is no more comprehensive, detailed information source on New York Subway Signalling publicly available, or perhaps even to insiders. This is THE way to learn about New York City Subway signalling. And it's for free, fun, interactive, extensible, and assumes no prior knowledge. (If you wish to learn about NY City signalling right now on the web, and aren't interested in trying NXSYS, or don't have a Windows® machine, please visit http://www.nycsubway.org/signals/, written by the author of this program and its documentation.)
The trains and tracks are imaginary, but the control panel, the extensive relay logic circuitry, and the real-time behavior and interaction of you and the imaginary trains and tracks are not. You press buttons and establish and cancel routings, control signals and switches, and interact with moving trains. You are limited by the circuitry to safe moves -- you are prevented from sending trains crashing at each other, setting routes that conflict with each other, moving switches while trains are on them, or executing any other invalid or dangerous action. Learning to control the switches and signals under these constraints is by no means trivial, and this is wherein the fun of NXSYS lies. NXSYS is supplied with two sample interlockings, a (fairly complex) 4-track layout, and a full-spec detailed three-track layout, an automatic demo that shows you what to do and comments on it, and a comprehensive help file in standard Windows® hypertext help format that explains not only all the functions of the program and supplied interlockings, but all of the railroad signalling, switching, and New York-specific concepts involved.
Site URL: http://nxsys.nycsubway.org/
Date resource added: 15-Nov-1998
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