CDL Practice Test


This is a free site and you are able to take the tests as a study guide as you prepare for the Indiana CDL knowledge exam. The topics covered in these Indiana practice CDL tests are taken from the Indiana CDL manual. You are welcome to take the tests as many times as you need to. You will be presented with 40 questions and you must answer 34 questions correctly to pass. There is a 50-minute time limit. You may not go back once you answer a question. Click the "Start Test" button below to begin.

1 / 40

Take extra caution when driving smooth bore tanks during:

2 / 40

Select the true statement about baffled tankers:

3 / 40

Which of the following is the proper definition of a cargo tank?

4 / 40

A truck with baffles will handle:

5 / 40

To test the tractor-trailer connection for security, you should:

6 / 40

What is the normal operating range for a truck's oil pressure?

7 / 40

This object releases the fifth wheel locking jaw to allow uncoupling.

8 / 40

Where are shut-off valves located?

9 / 40

What do you do first during step 3 of starting the engine and inspecting the inside of the cab?

10 / 40

What is the purpose of the supply pressure gauge?

11 / 40

Which of the following three hazard classes should NOT be placed into a temperature-controlled trailer (one with a heater/air conditioner unit)?

12 / 40

This should have no illegal stickers, dirt, obstructions, or damage to the glass.

13 / 40

Select the statement that best explains the "crack-the-whip" effect.

14 / 40

What does the air compressor governor control?

15 / 40

The minimum tire tread depth for front tires is:

16 / 40

In what position should the shut off valves on a the rear of the front trailer be in on a set of double trailers?

17 / 40

The locking jaws of the kingpin should close around:

18 / 40

This object should not have any missing parts, be fully raised, the crank handle is secured, and that there is no damage to the frame.

19 / 40

The sliding mechanism and locking device for a tandem axle on trailers is:

20 / 40

What should you hear when you have the hand valve on and are testing the trailer brakes by opening the service air line at the back of the trailer?

21 / 40

By law, the warning lights must only be used when approaching a:

22 / 40

Which of the following is a clue another driver is impaired:

23 / 40

There must not be more than_____for engine compartment belts.

24 / 40

What should you hear when you test the trailer brakes by opening the service air line at rear of trailer with the hand valve on?

25 / 40

Select the false statement about tractor protection valves.

26 / 40

How do you know when your brakes are fading?

27 / 40

You should keep a minimum of ____between another vehicle and the double trailer with 100 ft truck driving at 30 mph.

28 / 40

Surge affects the handling of a tanker by:

29 / 40

A disruptive passenger:

30 / 40

Select the purpose of fanning air brakes:

31 / 40

When should you avoid using the parking brake?

32 / 40

At 55 miles-per-hour it takes about 6 seconds to stop a fully loaded truck and the braking distance is:

33 / 40

Why should you cover cargo?

34 / 40

You should check that the following makes an audible noise:

35 / 40

Which of the following statements is FALSE:

36 / 40

On a drawbridge, you do not need to stop, but must slow down and make sure it's safe, when:

37 / 40

What is the service air line controlled by?

38 / 40

Which of the following is not a prohibited practice on the bus:

39 / 40

What might happen if a trailer is too high when you try to couple?

40 / 40

The Emergency Response Guide, ERG, can best be explained as _____.

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CDL Practice Test

How To Get An indiana Commercial Drivers License

All applicants for an Indiana CDL must meet strict eligibility requirements. Each applicant must be a legal resident of the state of Indiana and withhold a driver’s license that is at least one year old. Some other eligibility requirements are listed below. Individuals can apply for a CDL to transport property within the Indiana state lines at the age of 18 years old. Individuals must be 21 years of age or older to drive outside of Indiana state lines. In addition, to receive a Hazmat Endorsement or to transport people, individuals must be at least 21 years old.All applicants are required to have a DOT medical card and submit a self-certification form that describes the types of vehicles they intend to operate. Failure to submit the form or have a medical card will automatically disqualify an individual from obtaining their CDL.

Any applicants that fall into the following categories are automatically disqualified from receiving their commercial driver’s license.

  • Current driver’s license is suspended, revoked, denied, or canceled.
  • Conviction of driving a commercial vehicle impaired with the past 24 months.
  • Possessing more than one driver’s license.
  • Currently has CDL privileges disqualified or revoked in Indiana or another state.

All applicants must pass a knowledge exam and a CDL skills test in a vehicle that represents the license Class they are applying for.

X – Hazmat Tank
H – Hazardous Materials
N – Tank Vehicles
P – Passenger Vehicles
T – Double or Triple Trailers
S – School Bus

Hit the Open Road

indiana CDL License Test Tips

All applicants are required to pass a general knowledge test for their CDL. The knowledge test consists of 50 questions on the topic of commercial driving. Class A drivers must complete an additional 20 questions about combination vehicles. Those seeking endorsements must take an additional exam for each endorsement they wish to receive. A passing score for each test is at a minimum of 80 percent.

All skills tests will consist of three parts. These include a pre-trip inspection, basic control skills exam, and a road trip exam. These are to be completed at a local BMV office or other authorized examination site. An applicant must pass each part of the skills test to be eligible for their CDL.

Additional Information

Information on the Office of the Indiana Bureau of Motor Vehicles

The Indiana Bureau of Motor Vehicles is responsible for the administration of the CDL requirements and testing in Indiana. To get more information contact them via:


Phone:  888.692.6841


Additional Indiana CDL Helpful Links

Please use the links below to access more valuable Indiana CDL testing resources and to learn more about practice driving tests for the state of Indiana.