What happens when there is an accident (*) in the train?

In the station (see the normal situation here):

And in the train:

(*) Accidents are very common in the trains in Tokyo. At least, that is the word they use in those cases… But the truth, is that those accidents have a lot to do with the high rate of suicides… So far, I have suffered the consequences of two accidents. And I do not use one of the “famous” lines. O_o