Free 2027 IL DMV Practice Tests

Based on the official Illinois Driver's Handbook. Get ready for your IL SOS written exam with our comprehensive practice tests.

Car Motorcycle CDL Handbooks location_on DMV Locations

IL CDL General Knowledge

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Questions 30
Mistakes 6 Max
Passing 80%

IL CDL Air Brakes

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Questions 25
Mistakes 5 Max
Passing 80%

IL CDL Combination Vehicles

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Questions 20
Mistakes 4 Max
Passing 80%

IL CDL Hazmat (H)

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Questions 30
Mistakes 6 Max
Passing 80%

IL CDL Tanker (N)

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Questions 20
Mistakes 4 Max
Passing 80%

IL CDL Doubles & Triples (T)

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Questions 20
Mistakes 4 Max
Passing 80%

IL CDL Passenger (P)

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Questions 20
Mistakes 4 Max
Passing 80%

IL 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 8 Q science Hazardous Materials 8 Q water_drop Tanker 8 Q view_comfy Doubles & Triples 7 Q directions_bus Passenger Transport 8 Q school School Bus 8 Q

Commercial Driver's License (CDL)

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

Illinois DMV Test FAQ

How many questions are on the Illinois CDL permit test?

The IL SOS CDL knowledge test has 35 multiple-choice questions.

What is the passing score?

You must answer at least 26 questions correctly (75%) to pass.

Can I retake the test if I fail?

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