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[quote user="Euclid"]I interpret this to mean they ruled out any braking, either emergency or service because the first would have derailed the train and the second would have failed to stop in time; regarding being 2 seconds too late. [/quote] Got the source (the media you linked) this correct? Perhaps the physics tell a different story? Therefore I'm asking for the deceleration. BTW a deceleration of approximately 3 ft/sec² would lead to a speed of 6 ft/sec two seconds before the complete stop. That is about 4 mph. In my opinion 5 mph would be more realistic as delay and build-up time of brake power require a higher deceleration at the end. Regards, Volker
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