Young driver licensing systems in the U.S.

Iowa

To get a learners license you must:
Have a minimum age of	14
Before getting a license or restricted license you must:
Have a mandatory holding period of	12 months (effective 01/01/14)
Have a minimum supervised driving time of	20 hours, 2 of which must be at night¹
Have a minimum age of	16²^,¹
Restrictions during intermediate or restricted license stage:
Nighttime restrictions	12:30 a.m.-5 a.m.
Passenger restrictions (family members excepted unless otherwise noted)	parental discretion ³ (effective 01/01/14)
Minimum age at which restrictions may be lifted:
Nighttime restrictions	17⁴
Passenger restrictions	no

¹In addition to the certification in the learner stage, Iowa requires a certification of 10 hours of supervised driving, 2 of which must be at night during the intermediate stage.

²In Iowa, driver education is required for an intermediate license and for an unrestricted license if applicant is younger than 18.

³At the time of licensure, parents are permitted to waive a discretionary six month passenger limit of no more than one unrelated passenger younger than 18, effective Jan. 1, 2014.

⁴In Iowa, restrictions end after holding an intermediate license for at least 1 year and reaching age 17.