Let's take a look back into the 1990s with this route between Cincinnati, OH, and Chattanooga, TN, via Danville, KY. There's a lot more traffic than what you will see nowadays, along with trains having to crew change on the route at Danville and Oakdale. The route is quite busy because of the increased traffic Norfolk Southern saw, along with the country during this time period. So let's go back to the busier and more complicated times in 90s railroading today!
Eastern US TD3 Route