Catching a train

So far this week i've had a dream of waiting in a busy train station trying to figure out which train i need to get on and another dream where i'm actually on a train going fast but i'm not sure what my destination is. In some dream guides trains and stuff represent sexual images. I'm pretty literal waking and sleeping though (i.e.: when i dream about sex there's no question what the dream is about) so i'm thinking that in my case, dreaming about trains and train stations is more about changes. Either changes that are going on around me whether i'm aware of them or not, or changes that my subconcious knows i need to initiate. I suppose i'm okay with either scenario.