When computers fail here in the Netherlands, trains are just stopped until they can be fixed.
In some cases, trains can be ordered to drive "at sight" -- slow enough (walking speed, basically) to stop if there's something visible on the tracks that shouldn't be there (train, car, person, cow, whatever)
All trains stopped. Then a train was cleared to continue full speed while next one was waiting on a red light.
Not just when computers fail. When union negotiations fail, when it's too cold, when it's too hot, when it snows, when nature drops a leaf on the railroad tracks, or whenever they come up with a new excuse.
loading story #50282432
loading story #50279481
loading story #50279963