This is a visualization of data from the Federal Railroad Administration Office of Safety Analysis.
Specifically, accidents and casualties data is plotted. Accidents with Damage Weight takes into account how many dollars damage each accident caused.
Only data from 2011 to 2014 is available, as the FRAOSA only began recording latitude/longitude in 2011.
Hit the play button to view progression throughout the years.
Created by a couple high schoolers. You can view the source code here. Our name sucks, we know.