It's not just that rollercoasters are railborne vehicles. You can also set up rail transportation systems in your parks. Monorails, steamers, etc.

If management and train driving get too much, you can always build rail bridges.

Any more real, you'd have to pee in a cup!

It's not MSTS, but it'll do until that game is put on Steam.

Trolleys, subways, and those other vehicles, on a grander scale!

You can set up a better light rail system than those bureaucrats in your city!

Make your model trains work for you!

Like 2, but visually updated and more liberal with the laying of track.

Made by a railfan, for railfans; this classic business simulator has you setting up rail lines from here to Timbuktu!