Anything you want to know about highways? (Patreon)

So in the Cities Skylines 2 series I try and add in a bit of knowledge about how things are designed, why they are like they are- like in the most recent ones it was a bit on road signs, why they are the size they are and how the sign faces are designed. I don't always have an idea of what to talk to about so I figured it was worth asking you guys if there's anything you've ever wondered "why?" about anything to do with roads and highways. Leave a comment below with your question and I'll try and answer it in a future video!