3 ms·

In US, number of miles of rails only ever goes down. https://www.statista.com/statistics/183410/united-states-class-i-rail-mileage-since-1990/?__sso_cookie_che

• Retric 1y ago
  Removing redundancy is one way efficiency has gone up so much. https://www.bts.gov/sites/bts.dot.gov/files/Figure1_5_0.gif https://www.bts.gov/sites/bts.dot.gov/files/Figure1_5_0.gif