By implementing a graduated driver’s license program, the state of Illinois has tried to address some of the major causes of teen driver accidents. First, teens are limited to the number of passengers in their car. For the first two years of having a license, teens can have no more than one other non-family member under the age of 20 in the car while they drive. Also, teens are limited in the hours they can drive. They cannot drive between the hours of 10 p.m. and 6 a.m. on Sunday through Thursday, and 11 p.m. through 6 a.m. on Fridays and Saturdays.