Like snrub says, it depends on what you have to work with; type of top soil, topography, type of traffic, etc. If your property has a deep layer of sandy topsoil you may not have to do anything, other than drive on it. It will pack hard, yet drain well when wet,(like driving on a beach) whereas, if you have an exposed surface of slick clay, you will definitely need to build a crowned road with topping.
Topping commonly used around here (and I assume, Georgia) is inexpensive crushed limestone. The local oil and gas well sites use it on their access roads. Its sharp jagged features, and lime content allows it to bond well with a clay base, creating a hard shell, and it lasts a long time.
Check out your neighbors' driveways, whose conditions are similar to yours, and see what works for them.
Also, if your road descends a slope, it's better for it to zigzag, or be curvy, rather than running straight down the slope. When the path is straight, the descending water accumulates and gains velocity on its way downhill, thus creating more erosion, whereas, a curvy downhill path sheds water quickly at each curve. If you have no choice, and have to go straight downhill, you can carve some diversion/deflection ditches on either side, at intervals, throughout the downhill course, but, curvy is better.
