Idaho DMV Practice Test 2026
The Idaho written knowledge test has 40 questions and requires a 85% score to pass. Use these free practice tests to study the rules of the road, traffic signs, and state-specific laws before your appointment.
Updated April 2026
How we help you prepare
327 practice questions to help you master the Idaho DMV Test, 4 practice tests, 1 exam simulation
Idaho requirement to pass
40 questions on the real test, 85% passing score (34 of 40), no time limit
Study by Category is a Pro Feature
Master each topic before your Idaho written test. 4 categories are free to start.
Practice Runs
Complete practice runs to test your knowledge. Runs 1-2 are free.
Test 1: Rules of the Road
Right-of-way, turns, intersections, passing, lane changes
Test 2: Road Signs & Signals
Regulatory signs, warning signs, traffic signals, road markings
Pro Study Tools
Unlock the full learning system to maximize your chances of passing.
The Idaho written knowledge test has 40 multiple-choice questions. You need 34 correct answers (85%) to pass. There is no time limit. Tests are administered by the ITD. Questions cover road signs, traffic laws, and Idaho-specific rules. Read how DMV IQ prepares you for test day.
About the Written Test
Idaho's written knowledge test is administered by the Idaho Transportation Department (ITD) and consists of 40 multiple-choice questions. With a required passing score of 85% — 34 out of 40 correct — Idaho has one of the highest passing thresholds in the nation. The test covers road rules, traffic signs, signals, and safe driving practices from the Idaho Driver's Handbook.
Where and How to Take It
The test must be taken in person at an Idaho county driver licensing office. Walk-ins are accepted, though office hours vary by location — especially in rural counties. Tests are administered on computer terminals. Idaho does not currently offer online knowledge testing.
What to Bring
Bring proof of identity (birth certificate or passport), your Social Security number, and proof of Idaho residency. If you're under 17½, a parent or guardian must provide consent. The license fee varies by duration: $25 for a 3-year license, $30 for 4 years, or $55 for 8 years.
Test Day
After submitting your documents and completing a vision screening, you'll be directed to a computer terminal. The 40 questions cover vehicle and equipment safety, traffic laws, road signs, signals, pavement markings, and safe driving practices. There is no formal time limit. The 85% passing requirement means you can miss only 6 questions — study carefully.
If You Don't Pass
If you fail, you must wait 3 days before retaking the test. Each retake costs a $3 retest fee. There's no limit on the total number of attempts. Idaho also offers a free online practice test on the ITD website that mirrors the format of the real exam.
Idaho-Specific Details
Idaho issues Supervised Instruction Permits (SIP) at age 14½ — one of the youngest minimum ages in the country, reflecting the state's rural character. The state follows a Graduated Driver's Licensing (GDL) program: after holding a SIP for 6 months and completing 50 hours of supervised driving (10 at night), teens can apply for a license at age 15.
Permit vs. License
The SIP requires a licensed driver 21 or older (or a licensed instructor) in the front passenger seat at all times. Once licensed, drivers under 17 face passenger restrictions — no more than one non-family passenger under 17 for the first 6 months. Full unrestricted licensing comes at age 17.
Try It Yourself
Get a taste of the study experience. Answer a real question or preview the timed exam simulator.
Sample Flash Card
How many total hours of supervised driving practice are required for Idaho permit holders?
Try all 4 free practice runs
Start PracticingWhen approaching a school zone during school hours, the maximum speed limit in Idaho is:
Exam Simulator
Timed, 40-question test that mirrors the real Idaho DMV exam. 85% to pass.
Unlock with ProKnow exactly when you’re ready to pass the Idaho DMV test
The IQ Readiness Score™ measures six dimensions of test readiness and estimates your probability of passing the Idaho exam.