Freight trains run usually at 80-120km/h on railways with at-grade-crossings (for higher speeds you would need better brakes, and more energy which doesn't real

Freight trains run usually at 80-120km/h on railways with at-grade-crossings (for higher speeds you would need better brakes, and more energy which doesn't really make sense for freight). At least in Europe you only need to eliminate at-grade-crossings if you want to run trains over 160km/h