Railroad track including bridge, roadbed, crossing signals, switch tracks, both wood and rubber road crossings.

Two Meshes specifically made for Spline* use.

*Note spline system not included.

Use the method in this easy tutorial to create a landscape spline.

https://www.youtube.com/watch?v=JoCPi-9Op5U

Note:

If you're just doing a perfectly straight track for a long distance you will save on the poly count by using the straight track mesh instead of the spline as the spline requires more divisions to enable it to curve properly.