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IA · Handbook data
Extracted directly from the official DOT handbook. Values left blank aren't explicitly stated in the handbook.
Section 3 (Seat Belts and Child Restraints; Mobile Devices and Texting; OWI); Section 2.27 Move Over Law
The Iowa DOT written knowledge test has 25 questions. You need to answer 20 correctly (80%) to pass and get your IA driver's license or learner's permit.
Our AI-powered practice tests mirror the exact format of the real exam. Every question includes an instant explanation so you understand the why behind each answer — not just memorization.
IA note: At-home testing option available for teens
For adults 21 and older, the legal BAC limit in Iowa is 0.08%. Commercial drivers with a CDL have a lower limit of 0.04%. Drivers under 21 face a zero-tolerance policy with a limit of 0.02%—any amount of alcohol above this results in an automatic license suspension.
Iowa uses a point system where 2 points within 12 months triggers a warning letter, 3 points within 2 years may result in a 30-day license suspension, and 6 points within 2 years leads to a 90-day suspension. Serious violations like OWI add 12 points instantly and result in immediate suspension.
Iowa teen drivers with an intermediate license under age 17 must follow a midnight to 5 a.m. curfew for the first year (unless driving to/from work or a school event). Iowa does not impose passenger limits or specific cell phone restrictions on teen drivers beyond the statewide handheld ban that applies to all drivers.
The Iowa DOT written test has 25 multiple-choice questions covering traffic laws, road signs, safe driving, and state-specific rules.
You need to answer 20 questions correctly, which is 80%. Our practice tests match this exact format.
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Our questions are based on the official Iowa Driver Handbook, public question banks, and common DMV test patterns. We cross-verify with AI and human review.
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