Access regarding every train rail in the United States can be found in the National Transportation Atlas Database. This webpage not only includes links to all US rail information, but also all park system boundaries, the national highway network, usable waterways, etc. I found more information regarding train rails from the Illinois Dept. of Transportation. The information was helpful from the extensive pdfs they produced.
After observing these rails, I wanted to determine which rails would be the most heavily trafficked and which tracks would be the most congested. The National Transportation Atlas Database provides the GIS file for the FRA rail data. This map provides the companies that are permitted to use each track, so I am able to determine how many companies overlap in their routes daily.
Congestion is caused in most cases from where train rails intersect. The National Transportation Atlas Database also has data regarding all railroad bridges and all railroad crossings so I can further analyze each intersection. According to Amtrak, most delays nationally occur in Englewood. I hope by looking specifically into this neighborhood and compare it to other neighborhoods so I could reveal why it is so much worse.