My kid asked me this question and I didn’t have a good quick answer. Also, I’m not referring to the US Interstate highway system. I am referring to the state and county level.
Any insight is much appreciated!
In: 3
To identify them. There aren’t enough names. Names of roads and streets are commonly repeated. Numbers can all be different in a structured way. The numbers can reduce confusion and be related to each other. This is done all over the world.
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