Sometimes when I am looking at images of steam era
freight cars on sharp curves, I will see that the inside running rail of the
curve will be accompanied by an addition guard rail.
One example can be seen in the image linked below,
both track sections have the guard rail applied against the inside running rail
of the curve...
Can anyone tell me why this is done? I'm going to
guess it helps keep the cars on the rails while traversing the curve, but right
off the bat, I don't see how that would work.
