Is there a way to keep the train going without a player on it

i'm trying to make the trains to keep going even if the players fall from it on my server to do something like the movie unstoppable but i can't figure out how to do it, is there a variable or a plugin to it?

try server parameter
vehicle.trainskeeprunning true

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try server parameter
vehicle.trainskeeprunning true

Worked perfectly, Thank you very much!