Animated map by @piemadd shows all Amtrak trains over a 24 hour period. That's all there is. The US was once the mightiest railroad country but today train traffic is just trickling along. Source: https://t.co/67giUyucnepic.twitter.com/Hv1yHUO6IK
The map is even better than it might seem at first glance: the colors are the real colors, the patterns are the real patterns, and the size of the dots is the distance at which each light is visible. https://t.co/y7QzV1v7GFpic.twitter.com/9Zbh4Da62B