Free 2027 MO DMV Practice Tests

Based on the official Missouri Driver's Handbook. Get ready for your MO DOR written exam with our comprehensive practice tests.

Car Motorcycle CDL Handbooks location_on DMV Locations

MO CDL General Knowledge

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Questions 30
Mistakes 6 Max
Passing 80%

MO CDL Air Brakes

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Questions 25
Mistakes 5 Max
Passing 80%

MO CDL Combination Vehicles

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Questions 20
Mistakes 4 Max
Passing 80%

MO CDL Hazmat (H)

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Questions 30
Mistakes 6 Max
Passing 80%

MO CDL Tanker (N)

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Questions 20
Mistakes 4 Max
Passing 80%

MO CDL Doubles & Triples (T)

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Questions 20
Mistakes 4 Max
Passing 80%

MO CDL Passenger (P)

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Questions 20
Mistakes 4 Max
Passing 80%

MO CDL School Bus (S)

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Questions 20
Mistakes 4 Max
Passing 80%
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Practice by Topic

menu_book General Knowledge 7 Q compress Air Brakes 8 Q local_shipping Combination Vehicles 6 Q science Hazardous Materials 8 Q water_drop Tanker 8 Q view_comfy Doubles & Triples 8 Q directions_bus Passenger Transport 8 Q school School Bus 6 Q

Commercial Driver's License (CDL)

Class A Prep Class B Prep Class C Prep Air Brakes Endorsement

Missouri DMV Test FAQ

How many questions are on the Missouri CDL permit test?

The MO DOR CDL knowledge test has 25 multiple-choice questions.

What is the passing score?

You must answer at least 20 questions correctly (80%) to pass.

Can I retake the test if I fail?

Yes. Retake policies vary by state; MO DOR typically lets you re-attempt the knowledge test after a short waiting period.