There is no one around, and you see 10 workers on the main track, and one man standing on the second track, the switch between track one and two sits in front of you... they are wearing hearing protection and are too far away to warn... you must act quickly if you want to save lives, but you will kill the worker standing on the second track... what do you do?
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Switch tracks. If the man is standing right there he has enough sense to move out of the way.