Something I didn't know much about, loading gauge. Everybody know that rails have a gauge that is different in different places. I didn't know much about loadi

Something I didn't know much about, loading gauge. Everybody know that rails have a gauge that is different in different places. I didn't know much about loading gauge and how big deal it is. Of course its totally logical once you think about it, but I never did. Britain who build so much infrastructure in the Victorian period has tiny tunnels and bridges. So they have a small loading gauge. That has disadvantages, both for operations but also it makes electrification harder. https://en.wikipedia.org/wiki/Loading_gauge https://en.wikipedia.org/wiki/Loading_gauge