my sister is 16, has her license and can drive alone. however she must wait a full year before being able to drive any non related persons but can drive her younger siblings around unless they have a note
You can drive alone at the age of 18, but that is if you have passed all the necessary DMV tests required. If you are a minor, you are required to be accompanied by either a parent/guardian. Read more from http://www.cadrivingschool.com/dmvrequirements.asp.