What does my dream mean, about my mother?

i was on a train, it was going really fast and i was on the conductors seat bbut in this dream i was little and couldnt do much so i was just watching and i see my mom up in front, i panic b/c i know the trains going to hit her so i honk on the horn and at the last second my mom looked directly into my eyes and jumps out of the way but then a train from the other direction comes out of nowhere and it looks like she got hit. after both trains stop i ask the conductor if anyone got hit crying and he says no