I often dream about trains. Not like in every dream but very often.
It can be anything from just a rail to the metro or large freight trains. Most of the times, I have an unpleasant feeling of stress.
Sometimes I am running along a rail, and I have to watch out for trains so I'm not getting hit. Sometimes I am on a train that I shouldn't be on, or it is taking me to a bad place. Sometimes I have to cross a rail, and it's hard 'cuz trains are coming all the time and when they don't, I don't want to get an electric shock from the cables beside the rails. It happens that train-dreams contains dangerous electricity that I have to watch out for.
The trains can also just be parts of the background, but the feeling is mostly unpleasant whether the trains has a big meaning in the dream or not.

I have never been in a train accident in real life, but I have been dreaming about trains since I was a little child. I am now 17 years old, a girl. I've been traveling with trains my entire life but not more or less often than others. In real life I have not any problems or fears with trains.

If you want me to write down one or a couple of these train dreams, I could do that. I hope this is enough with information.