On inclines we normally use Half-Clutch etc to prevent vehicle from rolling back.
I was just wondering how the auto transmission vehicles are operated under such situations.
Automatic Transmission cars have higher ideal rpm, so whenever its in drive mode, it moves even if you don't press the accelerator pedal. So slope shouldn't be a problem.
this will clear all your doubts on how actually it works..please have a look http://en.wikipedia.org/wiki/Automatic_transmission