Speed limit signs the size of billboards don’t automatically stop your car if you exceed the speed limit - the existing technology, if installed, does stop a train.
Just getting back to the idea that
The
driver
of
the
train
was
speeding.
More taxpayer boondoggle added to the taxpayer boondoggle that Amtrak has been since it’s inception is...taxpayer boondoggle.
End it, don’t “mend” it.