You never know what you’ll find digging through federal documents.  Like this bar chart from page 18 of Chapter 2 of the Transportation Energy Data Book – 2010 that I referenced in the last post.

Assuming that “Oakland” here is actually San Fran, it looks like all U.S. heavy rail systems are present and accounted for on this list.  Anyone know how Atlanta got itself to #1 on this list, and why this claim isn’t more frequently shouted from various high-density rooftops?