None – neither. Atlanta has so many hills that they weren’t able to build it on any sort of a grid system. The only part of town with numbered roads is right smack downtown and that only goes for about 20 blocks.
But what we do have is something like 65 streets with the word “Peachtree” in it -
Peachtree St
Peachtree Road
West Peachtree
Old Peachtree
South Peachtree
Old South Peachtree
Peachtree Battle Road
Peachtree Center Rd
North Peachtree
Peachtree-Dunwoody Rd
and so on and so on.
We also have many streets where the name of the street changes in the middle of the intersection, even though the road is contiguous.
And one of my favorites -> the street name makes a 90 degree angle (i.e. if you go straight, the name changes, but if you turn right, you are on the original street. So you can be at the corner of Ashford-Dunwoody Rd and Ashford-Dunwoody Rd.