Iowa DOT Practice Test
Practice Iowa road signs, traffic laws and safe-driving rules with questions based on the official Iowa Driver's Manual.
Choose your test and click to begin:
Start with the free 10-question Iowa practice test. Then move on to the full 25-question mock test when you’re ready.
Choose from a set of practice quizzes tailored to different topics, difficulty levels, and test formats. All tests are completely free and can be taken as many times as you need.
Quick Test
10 Iowa knowledge test practice questions for a quick review.
Full Mock Test
25-question Iowa practice test. Aim for at least 20 correct to pass.
Study Mode
Work through Iowa knowledge test questions with explanations as you go.
Road Signs Drill
Practice Iowa road signs, signals, traffic controls, and pavement markings.
Iowa permit test quick facts
Number of questions
25
Passing score:
20 (80%)
Time limit:
Not stated
Fees:
$6 Class C instruction-permit fee
Minimum age:
14
GDL minimum requirement:
Hold a permit for 12 months, complete driver education and 20 hrs supervised driving (inc. 2 at night), and maintain a clean record for at least six months
Iowa Permit Test FAQs
How many questions are on the real Iowa permit test?
The Iowa knowledge examination contains 25 multiple-choice questions.
What score do I need to pass?
You need a score of at least 80%. On a 25-question practice test, that means answering at least 20 questions correctly.
How much does the Iowa knowledge test cost?
The Class C instruction permit costs $6.
Can I take the Iowa permit test online?
Applicants under 18 may be able to take the Iowa knowledge test online at home through the Skip the Trip program. A parent or guardian must apply to proctor the test, and the student must use an internet-connected computer rather than a phone or tablet. Some participating schools and agencies also administer the online test. Applicants may alternatively test at an Iowa DMV or participating county treasurer’s office.
What should I bring to the Iowa DOT office?
Bring a primary form of identification, proof of Iowa residency and proof of your Social Security number. Applicants under 18 also need written consent from a parent or guardian. Additional documentation may be required depending on the applicant’s circumstances.
What happens if I fail?
An applicant who fails a knowledge test may repeat it at the examiner’s discretion.
Are these practice tests based on the Iowa Driver's Manual?
Yes. These practice questions are designed to help you study topics from the Iowa Driver's Manual, including traffic laws, road signs, and safe driving rules.
What is in the practice permit test?
Our short tests consist of 10 questions and are perfect for quick refreshes when you only have a few minutes. Our full practice tests have 25 questions for which you'll need to correctly answer 20 to pass. All tests use the same question database, where the questions are selected at random from these categories:
- Occupant Protection
- Traffic Controls
- Laws and Rules of the Road
- Visual Search
- Lane Control
- Turns
- Parking
- Safe Driving Practices
- Vehicle Positioning
- Sharing the Road
- Special Driving Situations
- Handling Emergencies
- Driver Readiness
- Alcohol and Drugs
- Additional Driving Laws/Rules
How to best use these practice tests
Follow these steps for the most effective study experience:
Read the Iowa Driver's Manual
This is the official source of all rules you'll be tested on.
Begin with shorter quizzes
Start with road signs, lane rules, and right-of-way. These build strong foundational knowledge.
Move to full-length 25-question tests
These help you practice maintaining concentration throughout a full-length test.
After tests are scored, review the correct answers carefully
Understanding why an answer is correct improves retention.
Retake tests until you consistently score above the passing threshold
Retake the practice tests until you consistently score comfortably above Iowa’s 80% passing threshold.
Additional Recommended Resources
Use our links to review other resources that are available elsewhere.
Useful resources
Always refer to the Iowa Department of Transportation for the latest knowledge-test requirements, permit fees, document requirements, testing options and driver-education information.
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