Herb Kephart wrote: None really look like RR logos to me I agree, they all look like tatoos or something the German government designed during WW2.
I'd go with a heavy, serif typeface for something that is "railroad looking"...
I third that opinion. I'm sorry, but it looks more like KISS the rock band than KISS the principal.
KISS stands for:
I'm not insulting anyone's intelligence with this principle, but it basically means you need to keep a logo as simple as you can make it. The fact is the prototypes do the same thing. If every logo was over the top, every railroad would waste millions of dollars ensuring that all the equipment and advertising has that logo.
To give you some ideas, here are common modern Railroad logos:
These are all logos you'll find on letterheads, official documents, all equipment. If you were wanting to make a herald or shield/symbol for your railroad, you're on the right track but typically such heralds use a shape such as a circle, square, triangle, or parallelogram and use really simple font to spell out the railroad and only then on a few heralds is anything fancy used.
But, given the choices you laid out, #16 is the closest to a railroad herald.