What if I get 10 people off the train for one EMS call.

What about 100? If you bring an absolute like that to a philosophical argument you're backing yourself into a corner.

What if one person dies because of this call, what if other peoplre follow your example and more people die?

How about that? The driver asks for you to sacrifice your life then he will stop the train an let 100 people off the train. According to your logic a good choice.

There is a huge difference between wasted time and being dead escpecially for the relarives of the dead. Maybe you should tell your logic to someone who last someone because EMS was late.