Free CDL Practice Test

Free CDL Practice Test

Free CDL Practice TestThanks for choosing our free CDL practice test. While other websites will charge you, all our informative CDL test and resources are always free. If you’re looking to become a truck driver, your at the right website. Truckers Logic has hundreds of informative resources for new and veteran truck drivers. This is our first free CDL practice test. This free CDL test covers CDL general knowledge questions. In total, there’s 40 questions with multiple choices. The answers to our CDL practice test are at the bottom of the page. Don’t forget to bookmark this page so you don’t lose it.

Before you get to your CDL test, we know what it feels like to go through this whole process. The CDL training and testing process can be mentally exhausting. If you make a commitment to study for your commercial drivers license, you shouldn’t have any issues at all. Don’t forget to ask the Department of Motor Vehicles for your CDL study manual.

CDL License CDL Test

We also know that you may have a lot of questions and not know where to start, so here’s some great CDL resources to keep close. We have articles and resources on the entire CDL training process. There’s a few different ways that you can get your commercial drivers license.

CDL Training Process

Preparing For Your CDL Permit Exam

4 Tips For Your CDL Test

Company Sponsored CDL Training

Obtaining Your Commercial Drivers License

Truckers Logic also has information and resources on truck driver training schools. Truck driving schools are a big part of the CDL training process. You want to ensure that your going to a top tier trucking school. Below, we have several links on driver schools and information that will properly prepare you.

Truck Driver Training Schools

Benefits Of Enrolling In Driver School

Trucking Schools

Pros And Cons Of Truck Driving Schools

Truckers Logic Free Practice CDL Test

Thanks for your interest in our free practice CDL test. Below, you’ll find our 40 question CDL test. Just so your aware of the CDL testing process, each state has different test. It all depends on your local DMV office. One state may have 50 questions while another has 75. We suggest that you take time to contact your local DMV to find out how many questions will be on your CDL test. If you don’t know where your local DMV office is, try the DMV office finder.


1.Which of these can cause the vehicle to skid?

A. Light weight on the front axle

B. Sharp Turn

C. Over Acceleration

D. All of the above

2.Truck escape ramps

A. Protect vehicles from damage

B. Are only for specific trucks

C. Should only be used when all other methods fail

D. All of the above

3.When you park your truck and turn off the engine, you should:

A. Apply the parking break

B. Turn the steering wheel all the way to the left

C. Leave it in gear it you have a manual transmission

D. Do all of the above

4.Which of these statements are true about backing up a heavy vehicle

A. Backing up is always dangerous

B. You should always have assistance

C. When possible, turn toward the driver’s side

D. All of the above

5.The most common cause of skidding is:

A. Driving too fast

B. Poorly designed roads

C. Poorly adjusted breaks

6.You should test your parking break:

A. Moving slowly

B. Traveling at highway speed

C. On an incline

D. All of the above

7. When preparing to do a pre-trip inspection you must check to see that the parking brakes are on and/or chocked.

A. True

B. False

8. When getting in to start the engine and inspect inside the cab you must

A. Make sure the parking brake is on.

B. Put gearshift in neutral (or park if automatic).

C. Start engine and listen for unusual noises.

D. All of the above

9.  What are the two ways to know when to shift

A. Use engine speed (rpm) and road signs

B. Use your watch and engine sound

C. Use engine speed (rpm) and use road speed (mph)

10.  Retarders keep you from skidding where the road is slippery.

A. True

B. False

11.  What is the most important hand signal that you and the helper should agree on

A. Stop

B. Go

C. Right

D. Left

12. What is the proper way to hold the steering wheel?

A. Firmly with both hands on opposite sides of the wheel

B. With your right hand on the wheel

C. Firmly with one hand at the top of the wheel and the other at the bottom

13. How many red reflective triangles should you carry

A. 1

B. 2

C. 3

D. 4

14. Look at the gauges – the oil pressure gauge should come up to normal within how long after starting the engine

A. Minutes

B. Seconds

C. An Hour

D. It doesn’t matter

15. What are two special conditions where you should downshift

A. When starting off fast and speed shifting

B. Before starting down a hill and before entering a curve

C. Before starting up a hill and before entering a curve

16. What is the most important reason for doing a vehicle inspection

A. Safety for yourself and other road users.

B. It’s the law

C. To make sure everything is in working order

17. When backing your vehicle, which of the following is NOT recommended

A. Using only your side mirrors

B. Backing up on the left side

C. Backing up on the right side

18. The act of operating a motor vehicle in a selfish, bold, or pushy manner, without regard for the rights or safety of others is known as

A. Road Rage

B. Aggressive Driving

C. Assault Driving

D. Tempered Driving

19. Which of the following factors is NOT used to determine your safe speed when going down a long steep downgrade

A. Weather

B. Truck Weight

C. Time of day

D. Grade Length

20. Which of the following would NOT be part of a standard vehicle inspection

A. Tire problems

B. Seating defects

C. Steering system defects

D. Bad Brakes and drums

21. If you are stopped on an incline, how can you start moving without rolling back

A. Fully engage the clutch

B. Apply the parking break

C. Fully engage the clutch

D. Pump the accelerator

22. When driving in very hot temperatures, you should:

A. Check your tires every 2 hours or every 100 miles

B. Insure that you have enough antifreeze in the system

C. Let your tires cool down (remain stopped) if they are too hot to touch

D. All of the above

23. Which of the following are possible causes of tire fires

A.  Poor cargo ventilation or short circuits

B.  Dual tires that touch and under-inflated tires

C.  Loose fuel connections or under-inflated tires

D.  Improperly loaded cargo and dual tires that touch

24. Which of the following is NOT a part of the steering system

A. Tie rod

B. Steering knuckle

C. Main spring

D. Hydraulic fluid reservoir

25. Which of the following is NOT an appropriate reason to flash your braking lights

A. To signal to tailgaters that they are too close to your vehicle

B. To warn drivers behind you when you need to slow down

C. To warn vehicles approaching you from behind that you are driving slowly

D. To alert drivers behind you that there are hazards ahead

26. The average person requires how many hours of sleep per 24 hour period

A. 8-9

B. 7-8

C. 6-7

D. 5-6

27. When you are parked at the side of the road at night, you must:

A. Warn others by turning on your 4-way emergency flashers

B. Use your left turn signal lights to give warning to other drivers

C. Put your warning devices out within 15 minutes

D. Make sure your truck is 15 feet from the white line

28. True or False: When braking on downgrades, forceful, intermittent braking (snubbing) is safer than light, continued braking

A. True

B. False

29. You are exiting a highway using an offramp that curves downhill and you are driving a heavy vehicle. You should:

A. Make sure you’re 10mph below the speed limit

B. Slow down before you get into the curve

C. Downshift while you’re in the curve

D. All of the above

30. A pre-trip inspection should be completed:

A. At least once a day

B. At least once a week

C. Before you operate the truck

D. Anytime a problem should occur

31. What should you do when you are driving at night

A. Make sure you get plenty of sleep the night before

B. Keep your radio on so you don’t fall asleep

C. Drive slow enough to respond to an emergency within headlight range

D. Be sure you bright beams are working

32. Which of the following is the correct term for a long commercial vehicle’s tendency to swing wide on turns

A. Fishtailing

B. Sidetracking

C. Widetracking

D. Offtracking

33. What color and shape is a Regulation Sign

A. Yellow and diamond shaped with black lettering

B. Green with white symbols

C. Blue with white symbols

D. White rectangles with black lettering or symbols

34.  How far before a turn must you signal

A. 40 feet

B. 50 Feet

C. 75 Feet

D. 100 Feet

35.What would you do when facing a flashing red traffic light

A. Drive with caution and go

B. Yield to the lights until they turn green

C. Same as a stop sign, stop, yield, then go

D. None of the above

36.Water is the best way to put out a fire when the fuel is

A. Chemicals

B. Gasoline

C. Oil

D. None of the above

37.How is the phrase gross combination weight gathered?

A. Adding the load and trailer

B. Adding the driver weight, load and trailer

C. Adding the cargo, trailer and vehicle weight

D. Adding the driver weight, cargo, trailer and vehicle weight

38.If you lose hydraulic pressure and brakes, what should you do?

A. Start to use the emergency brakes

B. Start pumping the brakes

C. Start downshifting and slowing

D. All of the above

39.There’s three different ways to know that your having a tire failure, they are

A. Sound, vibration, feel

B. Sound, feel, alarm

C. Vibration, feel, pull

D. Sound, pull, visual

40.When using a fire extinguisher, you should get as close as you can to the fire

A. True

B. False


 CDL Practice Test Answers

1. D

2. A

3. A

4. A

5. C

6. B

7. A

8. D

9. C

10. B

11. A

12. A

13. D

14. B

15. B

16. A

17. C

18. B

19. C

20. B

21. B

22. D

23. B

24. C

25. A

26. B

27. A

28. A

29. B

30. C

31. C

32. D

33. D

34. D

35. C

36. D

37. C

38. D

39. A

40. B