Graduated Driver Licensing (GDL) systems allow teenagers to learn to drive under lower risk conditions and consist of a learner's stage, an intermediate stage and an unrestricted driving stage. The learner’s stage requires teenage drivers to complete a minimum number of months of adult-supervised driving in order to obtain a full license. The intermediate stage restricts teens from driving in high-risk situations for a specified period of time before receiving a full license. Advocates rates states on seven GDL component laws.
Medical and Work Loss Costs of Teen Crash Fatalities by State.