You would think the red lights and bumping block would be enough of a clue.
You're a subway operator entering the last stop on the line, a dead-end terminal.
The conductor is announcing "Last Stop". There are a string of red lights
leading up to a humongous yellow end-of-track bumper--with a passenger platform
crossing behind them in plain view. What do you do? Apparently some train
operators were taking the aforementioned clues as a sign that they should
keep on going. For those who don't reside in New York City, or who don't
ride it's subways, this is the only location in the system to my knowledge,
that has such a comically redundant instruction at the end-of-track.
(Photo taken at NYC Transit's Flatbush Avenue terminal on the southern (Brooklyn) end of the #2 line)