What really happened was, passing siding, one of the trains in the consist wasn’t set into “idle” as the train was stopped, the wheels continued to roll and grind down the rail
oops
Engineer: Whats that burning smell?
Conductor: Don’t know, never mind that where are those sparks from???
Engineer: Oh well…
I think that was old ?
But maybe this recent, http://www.cbc.ca/news/canada/montreal/st-henri-train-derailment-spills-3-500-litres-of-diesel-fuel-1.2548381
may involve at least one member of the “speed bump” incident although they may have transferred over to cpr by now.
imho 
BIG OOPS! I wonder how long it took to grind down?
I wonder when they got moving again if they backed the train out so as not to have to run over this spot and chance a derailment.
I have a used piece of track that has slight speed bumps in it, I wonder if the previous owner did something like this or maybe had a LGB track cleaner stall out.
Easy to do with battery r/c and brass track. Don’t ask me how I know. 
Actually did this to a piece of brass rail with an old aristo pacific. Energized the rails, set the pacific’s motor block up on 9v batteries to make a poor man’s stationary roller display.
Two days of the drivers spinning was long enough to burn about 1/32 of a inch of the rail off.
In reality it does not take long for a loco to make that large wheels burns. Later RJD
I doubt if they left at a slow speed it would derail anything, there’s a video out there whowing the army testing rails
Dennis Tetreault said:
Easy to do with battery r/c and brass track. Don’t ask me how I know.
You don’t have to reveal your secret, Dennis… I already know the answer…