Free practice for the Iowa knowledge test (the written permit test), written from the Iowa driver handbook, with every answer explained.
Based on the Iowa driver handbook. Requirements can change, so confirm with your Iowa licensing agency before your test.
Five steps from first try to test day. Your progress is saved on this device.
Each test has 20 questions. Get 16 or more right to match the 80% passing score.
The app has the rest of the Iowa question bank, more tests and a timed exam simulator.
Iowa guide
Every fact links to the official page it came from. The Iowa DOT website (iowadot.gov) blocked access, so facts come from the Iowa Code and Iowa Administrative Code (Transportation [761]) on legis.iowa.gov. Last checked Nov 15, 2026.
These links open official government websites. USA DMV is an independent study site and is not affiliated with any of them.
Sample questions
Think of your answer first, then open the explanation.
A. In a rear-facing child restraint system
Iowa requires a child under one year old and under 20 pounds to be secured in a rear-facing child restraint system.
A. 300 to 500 feet
Iowa school buses must turn on flashing warning lamps 300 to 500 feet before a stop where the limit is 45 mph or more, and at least 150 feet before where it is less than 45 mph.
B. The oncoming driver going straight
A driver turning left must yield to oncoming traffic going straight or turning right, even at an all-way stop.
What’s covered
Counts are from the full Iowa question bank in the app.
Road signs
Road signs follow the same national standard in every state. Learn them once by shape and color.
More Iowa tests, a timed exam simulator and a review of every question you miss.
Questions
35 questions. You need 28 correct answers (80%) to pass. Confirm the current format with your Iowa licensing agency before your test, because it can change.
No. They are practice questions written from the Iowa driver handbook and cover the same topics, but they are not the official questions. USA DMV is not affiliated with any Iowa agency.
Take the readiness check first to see your level. Read the handbook sections for the topics you missed, then take both free practice tests and read every explanation you got wrong. When you pass them comfortably, rehearse with a full-length timed exam in the app.
Not a government website. USA DMV (usadmv.app) is an independent study resource. It is not affiliated with, endorsed by or operated by any state DMV, the Texas Department of Public Safety or any other government agency. Practice questions are written to reflect official driver handbooks but are not the official test questions. Always confirm current requirements with your state’s licensing agency.
