Okay, it's an unpaved road, according to my ELA teacher, that symbolizes a long, harsh journey. You know, cause there's the saying "you got a hard road ahead of you" or something like that. Meaning that you have a hard journey ahead of you. And besides, none of the other ones make sense. If this happens to be wrong, I'm really sorry, let me know so I can fix it.
Because of the quotations around the statement. "GOod-mawnin' , suh," he said , lifting his cap politely. This shows someone is speaking to someone else. That means Dialect is happening.