> “We desperately need a law in this country to cap the length of a train,” Cassity says. “We need to know what too long is, and we need to know what the limit is going to be.” The big picture of the Risk Analysis study is correct, in his view: “They’re seeing the reality that long trains derail more often than shorter trains,” Cassity says.
The limit should be whatever fits in the sidings on a track. It's ridiculous that the rail industry can handicap passenger rail by just increasing the length of the trains until they physically can't fit in the sidings.
Then if they want to make their trains longer, they have to improve the infrastructure instead of putting pressure on everything and everyone except the shareholders' profits.