Yes, they do exist in full size. They aren’t common, but I saw one at a rotary dump facility.
thanks.
education never ends. i know something now, i didn’t yesterday.
but anyhow if it is something, that existed only later, instead of something non existant - i will try to hide these things from sight, as good as i can.
That’s why most ones in the model world are made to look like grade crossings, to try and disguise them.