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First one doesnt work well for me. My eye goes to the rails abrupt end, but then crosses to the sandy bank and brighter tree on the left before discovering the action further down the tracks. I think the camera position is the problem. If you crop some from each side, you make the image more dynamic, but lose the end of the rail on the left.
Second is more in-your-face engaging, in a good way. I like this one a lot. I would consider some desaturation of the cab, which I view as a bit distracting. But it may be part of your intention to use the color and the cab to jump down track.
Thanks for the feedback. Agree that the first shot is less that stellar. I included it as context to set up the second shot which contains none to explain why the rail is cut off. I also use it as a bookend at the end of slideshows on my photo album site.