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Free CDL Practice Test

 In CDL Training, Trucking Blog

After studying the CDL manual, take this CDL practice test to see how well you know the rules and regulations of driving a commercial tractor-trailer truck. Visit our CDL study guide to find more learning resources.

CDL Practice Test

This 27 question CDL practice test has questions covering a variety of trucking rules and regulations. The questions are multiple choice, true or false, and fill in the blank.


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#1. True or False: Gross Vehicle Weight (GVW) means the total weight of a single vehicle including its load.

#2. How should you know when to shift?

Engine speed and road speed is correct

#3. True or False: It is best to use low beams whenever you can.

False is correct

#4. True or False: As long as the engine isn’t overheated, you can safely remove the radiator cap.

False is correct

#5. True or False: The proper procedure if a tire blows out is to put the brakes on hard to stop quickly.

False is correct

#6. Two causes of tire fires are ______.

under-inflated tires and duals that touch is correct

#7. True or False: When using your fire extinguisher, it is best to get as close as possible to the fire.

False is correct

#8. True or False: Two ways that will help a drinker sober up are coffee and a little fresh air.

False is correct

#9. For any flatbed load you must have at least ____ tie downs.

2 is correct

#10. What are some things you should check on the front of your vehicle when doing the walk-around inspection?

Low beams, high beams, four way flashers, turn signals is correct

#11. What is the reason that placards are used?

Communicate the risk is correct

#12. If you do become sleepy while driving, you should _____.

stop to sleep is obviously correct

#13. You downshift automatic transmissions ______.

before going down a hill is correct

#14. What is the best way to see the sides and rear of your vehicle?

Your mirrors is correct

#15. In safe driving, what does communicating mean?

Letting others know you are there by using turn signals, four way flashers, and horn is correct

#16. True or False: If somebody is following you too closely, you should decrease your following distance.

False is correct

#17. True or False: Another driver may try to pass you on the right if you swing wide to the left before turning right.

True is correct

#18. Wet brakes can cause _____.

All of these is correct

#19. To avoid the effects that wet brakes can cause you may _____.

All of the above is correct

#20. When going down a long, steep downgrade, what factors determine your selection of a safe speed?

Total weight of the vehicle and cargo, length of the grade, steepness of the grade, road conditions, weather is correct

#21. Inspect the cargo and its securing devices again within the first ___ _____ after beginning a trip. Make any adjustments needed.

#22. True or False: Gross Combination Weight (GCW) is the total weight of a combination of vehicles NOT including the load.

#23. True or False: A low center of gravity means you are less likely to tip over when compared to a high center of gravity.

#24. True or False: You should do an after-trip inspection at the end of the trip, day, or tour of duty on each vehicle you operated.

#25. What should you look for when inspecting tires?

#26. You should do a vehicle inspection ______________ so you will learn all the steps and be less likely to forget something.

#27. Under which two special conditions should you downshift?


Find many other CDL practice tests here including air brakes, HAZMAT, doubles/triples and more.

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  • Stephen Hall

    If you found this practice useful please share it. 🙂

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