Not every event that happens uses worst-case data. In any case, while I don't know the actual class of rail where this emergency stop happened, this wiki article[1] suggests that most mainline track in the US is class 4, which allows a max of 80mph for passenger trains.
Out of curiosity, why do you mix metric and imperial in the same context? Stopping distance in metric for a speed in imperial?
British usage is a mess, they were the units I found. I didn't really think about it. I also can no longer find the table of stopping distances I found this morning.
Out of curiosity, why do you mix metric and imperial in the same context? Stopping distance in metric for a speed in imperial?
[1] https://en.wikipedia.org/wiki/Rail_speed_limits_in_the_Unite...