What is the evidence it was going 80 mph. Is it a camera?
the rail road locomotive version of the airplanes “Black Box” Believe it recorded 79 mph just before derailment.
(gee, everybody thinks I'm making all this stuff up. Even when it's printed in the article that the 'manager' of the run is likely to blame-meaning he told the engineers to ignore the speed limit in order to prove that they could beat the old route by 10-15 minutes).
Anyway, here is where AMTRAK tells how they know the train was doing 81 MPH.
Amtrak train going 81 mph just before derailing around 30-mph curve; 3 dead