It's not a revolution per say, except that since it can often be hard for trains to bypass congestion/stoppages that schedules can go awry easily. In the US, th

It's not a revolution per say, except that since it can often be hard for trains to bypass congestion/stoppages that schedules can go awry easily. In the US, there are huge bottlenecks around Chicago (where a crazy high percentage of all American rail freight passes through) and as much as the railways would love to build new track, various political/environmental issues have been preventing it. As the article states, freight trains used to kind of run "on demand" centered around the customer, which made scheduling efficient train loads hard. Now they're trying to group into a more normal schedule, but this can still be hard as freight loads don't necessarily go point-to-point to their final destination and delays can cascade for switch-overs at hubs. Source: Have been a long-time investor in a major railway and read the investor reports.