Those big roads that go from the city centre to the edges of the map are essentially highways. Or are you asking about something else?
63 days ago(+1)
Hmm, let me post an example see how you have a bigger road connecting to a smaller road through the town. I was trying to figure out a simple way that one could possibly modernize a bit but keep the overall theme. I don't know how easy or possible this is to code though. But I guess you can call it "Adjacent" roads / Adjacent highways.