My heart goes out to anyone desperate enough to consider ctb by train. I mean obviously everyone about to ctb is prob feeling desperate to some degree, but to choose this particular method.....
A lot of people will argue it's unfair and traumatic to the driver, and I agree. BUT... I also think it takes balls the size of watermelons to actually stand there and face an oncoming train. Ethical issues re: the driver notwithstanding, I have to confess I admire that level of courage as it's not something I possess. I would quite literally sh*t myself at the first sight or sound of that thing chugging along towards me.
Personally I would much rather drift off in a blissful morphine or fentanyl-induced haze, but you did say other methods aren't available to you.
I'm so sorry you're at this point. Sending you a hug for what it's worth