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(1) Designed to aid young novice drivers between the ages of 15 and 18 gain driving experience. To date they apply only to drivers under the age of 18 except for lower BAC laws.
(2) Graduated licensing as defined by the National Highway Traffic Safety Administration: Stage 1: Learners' permit required. Other recommended components are that the driver pass vision and knowledge tests; must drive with a licensed adult age 21 or older; all occupants must wear seat belts; blood alcohol content (BAC) set at zero or near zero (see footnote 5); driver must be traffic-offense and alcohol-offense free to move up to the next stage; permit's appearance is distinctive from other licenses. Stage 2 (Intermediate or Provisional): Driver must complete stage 1; must pass a road test; all occupants must wear seat belts; BAC set at zero or near zero; licensed adult required in the vehicle during late night hours; driver must be traffic-offense and alcohol-offense free for 12 months to obtain a regular license. Stage 3: Full license.
(3) Vary by state with regard to age of driver, night hours that driving is restricted, and who must accompany driver during night hours. Exceptions may be made for work, school activities or emergencies.
(4) Limits the number of passengers a young driver may have in the vehicle to eliminate distractions.
(5) Specifies that a driver under age 21 can be convicted of drunk driving if found driving with a blood alcohol content (BAC) above the level shown. Conventional BACs for older drivers are generally between 0.08 and 0.10.
(6) Required for a shorter period if driver has taken a drivers education course.
(7) Driver may not operate a cell phone in the learner or intermediate stages.
(8) Applies to drivers age 18 and under.
(9) If license applicant is 16 then mandatory holding period in learner stage is 60 days, if 17 then mandatory holding period in learner stage is 30 days. License applicants younger than 18 must have completed driver education if available in the public school or, if unavailable, must complete 50 hours of supervised driving in addition to that required in the learner stage.
(10) New Hampshire does not issue learner’s permits. The minimum holding period refers to the intermediate license for 16-and 17-year-olds for the first 3 months only.
(11) Minimum holding period applies to the limited DJ license for permit holders who pass a road test and certify 20 or more hours of practice; with some restrictions.
(12) For the first six months after a learner’s permit is issued. Thereafter there are no restrictions.
(13) Applies to drivers age 19 and under.
Sources: Insurance Institute for Highway Safety (IIHS), National Highway Traffic Safety Administration (U.S. Department of Transportation), National Conference of State Legislatures, Insurance Information Institute. | 
