Direct experience = Grandpoppa killed himself this way. Virtually impossible to identify the body. Traumatised the fudge out of my mom and because it was on a railway had to go to coroner's court. In court got to hear from the driver; harrowing.
Ok fair enough. But again, in countries where there are dystopian gun laws that do not allow ownership, and no other means of self deliverance, well what the fuck -- these nations better understand that people who are truly in a bad way are going to ctb one way or another and that they cannot win against someone hell-bent on terminating their lives, therefore they best allow a means otherwise it will cross over and effect other people, e.g.: the train conductor.
That said, the fact that Japan punishes the family of the deceased is bothersome - because all it does is allow the rail company to extort money from innocent people.
There is also a pending lawsuit in Germany of a rail company wanting to sue the family of a man who ctb via train. If it goes through and if the rail company wins, it will set a precedent in EU law.
So the only solution if one is to ctb via train, then it might be best to do so without any I.D. on them. Assuming one's DNA is not on any database of any kind (police, armed forces, etc) because they will do a test in an attempt to find out who you are.
You'll be tossed in an unmarked grave, probably with a bunch of dead homeless. Your family will never know what actually happened, and eventually after 7 years you will be legally pronounced dead. This is only if you do not have I.D. on you. If you do ctb via train with I.D. then you run the risk of having the government or the rail company extort money from your family - though this is speculation on my part.
Whether or not to have I.D. on you before you ctb via train is a call each individual is going to have to make before one commits the act.