The free Train Dispatcher game and territories (free and pay) can still be downloaded (for how long?). See: [
www.signalcc.com]
Be aware that it's 16-bit software so it won't run in modern Windows unless you have something with 32-bit Windows (rare, usually in crummy tablets that are hard to use for a game). It runs well in Windows 3.1 (which it was designed for) under DOSBox in modern computers. Good luck finding a copy of Win3.1, of course.
I don't recommend using it in a regular virtual machine like VirtualBox with an old OS like Windows 98. It works, but runs so fast that it's unplayable. DOSBox is a better system for that because its timing parameters are set to emulate the old (8088, 80286, 80386) chips that DOS and early Windows software ran on.