MO DMV Practice Test

The MO DMV written test is taken by Missouri residents seeking an instruction permit, which is available from age 15, or a Class F operator license. This page offers free practice sets by topic, from traffic signs to right-of-way and impairment laws, plus worked answers, a study plan and answers to common questions. Our questions are written by us and are not real exam questions.

MO DMV Exam at a Glance

What the MO DMV is and how it works

According to Missouri Department of Revenue, “If you are applying for a Class F (operator) license, you must take a 25 question multiple-choice written test.”^[1]

The Missouri written test is the knowledge check applicants take on the way to a driver license. The Missouri Department of Revenue is the official body for licensing, and the Missouri State Highway Patrol (MSHP) administers the written and driving skills tests. Examination stations operate in every county, and no appointment is needed for the written test.

Applicants for a Class F (operator) license take a 25 question multiple-choice written test. An instruction permit is available from age 15. Renewing a Class F license also involves a road sign recognition test and a vision test, so sign knowledge stays useful well beyond the first license.

If you do not pass, the written test can be taken up to 2 times per day until you pass. The driving skills test has a tighter limit: 1 attempt per day and 3 per 12 months.

The passing score, fees, required documents and any extra rules for younger applicants are not part of the facts we have verified, and they can change. Read the current Missouri Department of Revenue driver guide and the MSHP site before you go. Rules for other license classes, including commercial licenses, differ and should be confirmed with the official source. These practice sets are study aids only and do not predict your result.

Worked examples: how to reason through MO DMV questions

These are practice questions written for this site, not questions from the real exam. Each explanation shows why the right answer is right and why the others are wrong.

Example 1

Question: What is the Smith System's first principle of defensive driving?

1. Aim high in steering — look far down the road, not just at the vehicle ahead
2. Always drive in the left lane
3. Keep both hands at 10 and 2 on the steering wheel
4. Never exceed 5 mph under the speed limit

Answer: A. Aim high in steering — look far down the road, not just at the vehicle ahead

Explanation:

The correct answer is to aim high in steering: look far down the road, not just at the vehicle ahead. Looking well ahead shows you hazards early, which gives you more time to react smoothly.

Always driving in the left lane is wrong because lane choice depends on traffic, road type and local rules, and no defensive driving method tells you to stay left. Keeping both hands at 10 and 2 is a common hand-position habit, but it is not the principle this question asks about. Never exceeding 5 mph under the speed limit is wrong because safe speed depends on conditions, and driving well below traffic flow can create its own danger.

Rule to remember: defensive driving is about scanning and planning ahead, not following a fixed lane, hand or speed habit.

Example 2

Question: What does an octagonal (eight-sided) red sign always mean?

1. Yield to oncoming traffic
2. Stop completely before proceeding
3. Speed limit ahead
4. No entry for vehicles

Answer: B. Stop completely before proceeding

Explanation:

An eight-sided red sign means stop completely before proceeding. The octagon shape is reserved for stop signs, so you can recognise it even if the sign is covered in snow or seen from behind.

Yield to oncoming traffic is wrong because yield signs are triangular, and they ask you to give way rather than stop in every case. Speed limit ahead is wrong because speed signs are rectangular and carry a number. No entry for vehicles is wrong because that message uses a different sign design, not the octagon.

Rule to remember: shape carries meaning. An octagon is always a stop, and you stop fully at the line, the crosswalk or the intersection edge before moving on when it is safe.

Example 3

Question: What is required to obtain a commercial driver's license (CDL)?

1. Passing knowledge tests, a skills test, meeting medical requirements, and being at least 18 or 21 depending on travel type
2. Only a written test and minimum age of 16
3. A college degree in transportation
4. Five years of driving experience with a regular license

Answer: A. Passing knowledge tests, a skills test, meeting medical requirements, and being at least 18 or 21 depending on travel type

Explanation:

The correct answer describes the full set of requirements: passing knowledge tests, passing a skills test, meeting medical requirements, and being at least 18 or 21 depending on the type of travel. A commercial license is built from several parts, and a candidate needs all of them.

Only a written test and a minimum age of 16 is wrong because it leaves out the skills test and medical standards and gives an age that does not match the question. A college degree in transportation is wrong because no degree is required to drive commercially. Five years of driving experience with a regular license is wrong because experience alone does not replace testing and medical requirements.

Rule to remember: for a commercial license, think tests plus skills plus medical plus age. Confirm the details with the official source.

How to use these practice tests

Start by reading the official Missouri driver guide from the Department of Revenue so you know what the written test covers. Then take the practice test once as a baseline and note which topics cost you the most answers.

• Work through the topic sets that match your weak spots, such as traffic signs and signals, right-of-way rules and alcohol and drug impairment laws.
• After each set, read the explanation for every question you missed, then find that point in the official guide.
• Add defensive driving and sharing the road to build habits that also help on the road.
• If you plan to renew later, keep practising signs, since renewal includes a road sign recognition test.

In the last days before your visit, repeat the sets you missed most and retake the full practice test. Short, regular sessions work better than one long cram. Our questions are not real exam questions, so use them to find gaps and let the official guide settle any doubt about a rule.

Sources & last verified

1. dor.mo.gov — number of questions (official source). “If you are applying for a Class F (operator) license, you must take a 25 question multiple-choice written test.” Verified Oct 21, 2026.
2. apps.mshp.dps.mo.gov — retake policy, eligibility (official source). “You may take any written test up to two times per day if necessary until you pass.” Verified Oct 21, 2026.
3. dor.mo.gov — renewal (official source). “NOTE: An applicant for driver license renewal is required to take a road sign recognition test and vision test.” Verified Oct 21, 2026.
4. Missouri Department of Revenue — delivery (official source). “The Patrol administers Missouri’s written and driving skills tests. Examination stations operate in every county, and CDL testing sites are located within each troop.” Verified Oct 21, 2026.

How we verify: editorial & fact-checking policy. Report an error: contact us.