Its really not Atlanta's fault for not paying attention to speed limit signs...its pretty common knowledge that ITP is 55 everywhere. That's one of the less rational reasons that has been brought up so far.
And on the back of your ticket it tells you how to pay without appearing, which you...
This. I live downtown...its really not as scary as people seem to think. I've been in small towns where I've felt just as uncomfortable as parts of Atlanta.