Iowa DOT Permit Practice Test

Practice free with questions based on the official Iowa driver handbook, with every answer explained.

Updated on 2026-11-06 · Ver en español

DMVPermitUSA is an independent study tool. It is not affiliated with, endorsed by or operated by the Iowa Department of Transportation or any other government agency. Requirements were checked against official Iowa sources (listed below) and can change: always confirm with the DOT before your test.

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Iowa permit test at a glance

Agency	Iowa Department of Transportation (DOT)
Passing score	80% or higher
Minimum permit age	14 years old
Permit holding period	12 months
Supervised driving	20 hours, including 2 between sunset and sunrise, before the intermediate license
Provisional license from	age 16
Full license	at 17
Test languages	Offered in English and 20 other languages, including Spanish, Arabic, Bosnian, Burmese, Somali and Vietnamese; an interpreter can be arranged by appointment for other languages.
Official handbook	Iowa Driver's Manual

Try 5 Iowa permit test questions

In Iowa, what is the legal blood alcohol concentration (BAC) limit for drivers 21 and over? 0.02% / 0.05% / 0.08% / 0.10%. Answer: 0.08%. As in almost every state, the limit in Iowa is 0.08% for drivers 21 and over; 0.04% for commercial drivers, and zero tolerance under 21.
A solid yellow line on your side of the center line means: Passing is allowed / Do not pass / Lane for turning only / Bicycle lane. Answer: Do not pass. A solid yellow line on your side means passing is not allowed. A broken line on your side means you may pass when it is safe.
A round yellow sign with a black X and two R letters means: Road closed / Railroad crossing ahead / Rest area / Roundabout ahead. Answer: Railroad crossing ahead. This advance warning sign tells you a railroad crossing is ahead: slow down, look and listen, and be ready to stop.
Two vehicles reach a 4-way stop at the same time. Which one goes first? The one on the left / The one on the right / The larger vehicle / The one going straight. Answer: The one on the right. At an all-way stop, the first to stop goes first. If two vehicles arrive together, the driver on the left yields to the driver on the right.
What is the minimum safe following distance in good conditions? 1 second / 2 car lengths / 3 seconds / 100 feet. Answer: 3 seconds. Keep at least 3 seconds behind the vehicle ahead, and more in rain, at night, or behind trucks and motorcycles.

How the Iowa DOT permit test works

The Iowa knowledge test is a multiple-choice exam based on the official DOT handbook, the Iowa Driver's Manual. To pass you need 80% or higher.

Teens can take the knowledge test at an Iowa DOT driver's license location or county treasurer office, at home with a parent as proctor, or at a participating school.

Offered in English and 20 other languages, including Spanish, Arabic, Bosnian, Burmese, Somali and Vietnamese; an interpreter can be arranged by appointment for other languages.

Iowa learner's permit requirements

In Iowa you can apply for a learner's permit at 14. Applicants under 18 usually need a parent or guardian's consent.

Teens must complete an Iowa-approved driver education course before getting an intermediate license.

Before the road test, teen drivers must hold the permit for at least 12 months. Supervised driving required: 20 hours, including 2 between sunset and sunrise, before the intermediate license.

Proof of identity and date of birth (such as a birth certificate or passport).
Your Social Security number, if you have one.
Proof of Iowa residency.
A vision screening and the knowledge test.

The DOT publishes the exact document list: check it before your appointment, especially if you want a REAL ID-compliant card.

Iowa graduated driver licensing (GDL)

After the learner stage and the road test, teens can get a provisional (intermediate) license from age 16.

Intermediate drivers may drive alone only between 5 a.m. and 12:30 a.m. unless a parent signs a waiver for school or work. If the license carries the passenger restriction, no more than one unrelated minor passenger is allowed for the first six months.

Restrictions end and you hold a full, unrestricted license at 17, provided your record stays clean.

Iowa rules worth knowing for the test

Signs and most rules are the same nationwide, but each state has its own laws — and the DOT test asks about them.

Iowa lets teens take the permit knowledge test at home with a parent acting as the proctor.
You need a clean driving record for six consecutive months before the intermediate license, and for 12 consecutive months before the full license.
The full license at 17 also requires 10 more supervised hours, 2 of them at night, logged while you hold the intermediate license.

What the Iowa knowledge test covers

Topics follow the chapters of the DOT handbook. These are the ones asked most often:

Road signs by shape and color (federal MUTCD standard): see the road signs guide.
Right-of-way at 4-way stops, left turns, crosswalks and for emergency vehicles: right-of-way rules.
Speed limits in mph and the 3-second following rule: speed guide.
Alcohol and drugs: the 0.08% BAC limit, zero tolerance under 21 and implied consent.
Traffic signals and pavement markings, parking, passing, and sharing the road with cyclists, motorcycles and trucks.

How to study for the Iowa permit test

Read the official DOT handbook once cover to cover, then take practice tests by topic to find your weak spots. Once you consistently score above 90%, take a full timed mock exam.

Drill the numbers — ages, distances, speed and BAC limits — they are the most-missed questions. More tips in how to pass the permit test.

How to get your learner's permit in Iowa

Check the minimum age In Iowa, you can apply for a learner's permit at 14.
Complete the required course Teens must complete an Iowa-approved driver education course before getting an intermediate license.
Study the handbook and practice Read the official DOT handbook and take practice tests until you pass comfortably.
Gather your documents Proof of identity, Social Security number and Iowa residency; parental consent if under 18.
Pass the vision and knowledge tests To pass you need 80% or higher.
Drive supervised Hold the permit for at least 12 months. Supervised driving: 20 hours, including 2 between sunset and sunrise, before the intermediate license.
Take the road test From age 16 you can get a provisional license.

Iowa permit test FAQ

What score do you need to pass the Iowa permit test?

You need 80% or higher.

How old do you have to be to get a learner's permit in Iowa?

You can apply at 14. Applicants under 18 usually need a parent or guardian's consent.

How long do you have to hold your permit in Iowa?

At least 12 months for teen drivers. Supervised driving required: 20 hours, including 2 between sunset and sunrise, before the intermediate license.

Can I take the Iowa permit test in Spanish?