I apologize, starryprince...I didn't mean to blow you off by just giving you a link. I just thought that particular explanation (on the dream interpretation site) was more in-depth and descriptive that a lot of their interpretations are.

I would think that a train symbolizes, or is a metaphor for, a journey. There's some kind of passivity involved possibly, since your a passenger not a driver.

I think I need more than just symbols or images to really get a feeling for your dream. For example, how did you feel in the dream? Frustrated? Afraid?