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Part 4 · The road test and after you pass in Iowa

After you pass in Iowa: restrictions and your licence

For most Iowa teens, finishing driver education and turning 16 leads to an intermediate license. It is the first time you can drive alone, but it comes with limits designed for the riskiest months of a new driver's life.

Iowa DOT notes that crashes are the number one cause of teen deaths and that the first six months of unsupervised driving are the most dangerous. The rules below are built around that.

By the end of this topic you can

  • You can follow the night driving limit and use the waiver correctly.
  • You can apply the passenger restriction and know whether it is on your license.
  • You can explain how a ticket or crash affects your full license date.
  • You can list the steps to move up to a full license.
  • You can explain what changes when you turn 18 and 21.

What you need to know and understand

  • Intermediate drivers may drive alone only between 5 a.m. and 12:30 a.m.
  • A parent can sign form 431170 to allow late driving for school activities or work; carry it in the car.
  • For the first six months, you may carry only one unrelated minor passenger without adult supervision, unless your parent waived this when the license was issued.
  • Siblings, step-siblings and other children living in your home do not count as unrelated minors.
  • Never carry more passengers than there are seat belts.
  • Iowa's hands-free law applies to intermediate drivers, and Iowa DOT advises them not to use a phone or electronic device at all while driving.
  • A full license is available at 17 after 12 clean months on the intermediate license and 10 more supervised hours, 2 at night.

Your intermediate license limits

Your parent decides about the passenger restriction when the license is issued. It can only be waived at that moment; if it is accepted, it stays for the full six months. Breaking a restriction can lead to a citation, a suspension and a restart of the 12-month clean period.

  • Night limit: from 12:30 a.m. to 5 a.m. you need a qualifying supervising adult beside you, unless you carry a signed waiver (form 431170) and are driving to or from work or school activities.
  • Passenger limit: if the back of your license shows the restriction, no more than one unrelated passenger under 18 for the first six months when you drive without adult supervision.
  • Seat belts: every passenger needs their own belt.
  • Phones: the hands-free law bans holding or manually using a device, and Iowa DOT's guidance for intermediate drivers goes further: no phone or electronic device use while driving, other than equipment built into the car.

Moving up to a full license

Every conviction, crash or broken restriction on an intermediate license pushes your full license back by 12 months. A first offense brings a warning letter and possible suspension; a second brings a 30-day suspension.

  1. Turn 17 and hold the intermediate license for at least 12 months in a row.
  2. Stay free of convictions, at-fault crashes and restriction violations for the 12 months before you apply.
  3. Log 10 more supervised hours, at least 2 between sunset and sunrise, and have your parent sign the affidavit.
  4. Book a DMV appointment with parental consent if you are still under 18.

After the full license

A full license has no GDL restrictions, but it is marked 'under eighteen' or 'under twenty-one' until you reach those ages. Zero tolerance still applies until 21, so any alcohol at .02 or more means revocation. Teen licenses have shorter terms than the standard eight-year adult license, so watch your expiration date. Our deeper intermediate license guide covers waivers and passenger questions in more detail.

Common mistakes

  • Driving home from a party at 1 a.m. with the work waiver. The waiver only covers work and school activities.
  • Giving rides to two friends in the first six months when the passenger restriction is on your license.
  • Thinking the restriction lifts after three months. It lasts six months.
  • Forgetting that one ticket delays your full license by a whole year.
Practice tip: Agree a family driving contract that copies the license limits, including what to do if you are running late near 12:30 a.m., so you never feel pushed into breaking a rule.

Test yourself: After you pass in Iowa: restrictions and your licence

Answer each question, then read the explanation. Questions come in a random order each time.

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Go deeper

Sources: Intermediate License, Passenger Restriction for an Intermediate License and Full License pages (Iowa Department of Transportation); Iowa Code section 321.180B, subsections 2 to 4 (Iowa Legislature, Iowa Code 2026); Renew Driver's License page, expiration dates (Iowa Department of Transportation). Independent guide, not affiliated with any licensing agency. Always check the latest official rules with the Iowa licensing agency.