Missouri
CDL Practice Test

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Use this free site to practice for the Wyoming CDL test. You can take these practice test questions as many times as you like. Topics covered in the practice tests include gross weight, hazmat transportation, air brakes, and pre-trip inspection Class A rules. 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 Quiz" button below to begin.  Good luck!

1 / 40

Which of the following is something the driver must watch for:

2 / 40

How often should you check your cargo?

3 / 40

This gauge will indicate if the generator or alternator is charging:

4 / 40

When checking for_____you are looking for dripping fluids or puddles on the ground below the transmission or engine.

5 / 40

Is this statement true or false: You do not need to use the parking brake if are leaving your vehicle for a short amount of time.

6 / 40

Alcohol evaporators in some air brake systems help to:

7 / 40

What do yo need to do before supplying air to the air tanks of the second trailer?

8 / 40

When this item is missing or loose, movement may occur between the fifth wheel assembly and the frame.

9 / 40

The belt that you need to make sure is securely mounted, without frays, and adjusts and latches properly is the:

10 / 40

When fueling a placarded vehicle, someone must always be:

11 / 40

To avoid rollover when going through a curve, the best thing to do is:

12 / 40

When you have a major leak in the service line and you apply pressure to the brakes, the service air pressure will escape and:

13 / 40

A "transport index" relates to products that are:

14 / 40

The interlock system for the brake and accelerator on a transit coach may be used:

15 / 40

When driving on a clear night with the vehicle lights on, your speed should be such that you can stop within _____.

16 / 40

Select whether the following statement is true or false: Front wheel brakes are good to use in all conditions.

17 / 40

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

18 / 40

Remember to_____when steering to avoid a crash while driving doubles.

19 / 40

How can you check slack adjusters?

20 / 40

You are required to have a tank endorsement when transporting:

21 / 40

If you have to swerve to avoid a hazard, it's important to:

22 / 40

Why should you test the tractor protection valve?

23 / 40

What is the benefit of ABS?

24 / 40

At what pressure is the safety valve in the air compressor tank set to open?

25 / 40

What do you need to do to supply air to the air tanks of the second trailer?

26 / 40

The basic description of a hazardous material includes the hazard class, the identification number, and the proper shipping name. Which one must appear first on the shipping paper?

27 / 40

Do not tow or push a disabled bus with riders aboard the vehicle, unless:

28 / 40

What is the purpose of a driver placarding his or her vehicle?

29 / 40

The minimum tread depth for steering axle tires is:

30 / 40

Make sure____when the front trailer supports are up and the trailer is sitting on the tractor.

31 / 40

How do you check the power steering fluid?

32 / 40

What does the air compressor governor control?

33 / 40

Animals and human foodstuffs should not be loaded in the same vehicle with?

34 / 40

How do you check the air flow to the last trailer?

35 / 40

You should_____when an emergency requires you to quickly stop your tanker.

36 / 40

You must keep shipping papers describing hazardous materials ______.

37 / 40

The most important hand signal you should agree on with a helper is:

38 / 40

How do you supply air to the trailer tanks?

39 / 40

You need to be extra careful when driving smooth bore tanks:

40 / 40

The designation RQ identifies the material's:

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CDL Category Practice Tests

CDL Practice Test

How To Get A Missouri Commercial Drivers License

All applicants must be of the legal age of 18 years old or older to apply for their intrastate CDL privileges. In order to participate in interstate driving and obtain a HazMat Endorsement, the applicant must be 21 years old or older.

All applicants must have a certified medical examiner’s certificate to be eligible for a CDL.

Any applicants that fall into any of the below descriptions are disqualified from obtaining their Missouri CDL.

  • Any driver who has restricted CDL driving privileges in another state.
  • Any driver who has a valid driver’s license from another state.
  • Any driver who’s license is currently suspended, revoked, or canceled.

All Missouri residents are required to complete both knowledge tests and skills tests in order to receive their CDL.

Endorsements 

T – Double or Triple Trailers
P – Passenger
N – Tank Vehicles
H – Hazardous Materials
X – Combination of HazMat and Tank Vehicle

Hit the Open Road

Missouri CDL License Test Tips

All applicants must pass a knowledge test to receive their CDL. Class B and C applicants must pass a 50 question exam. Class A applicants must pass a 70 question exam which includes questions about combinations. All endorsements require an additional knowledge assessment specific to the endorsement sought. Applicants must pass all required knowledge tests with a score of 80 percent or more.

In addition to the knowledge test(s), applicants will be required to pass a three-part practice skills test. This is a hands-on assessment of the applicant’s skills in pre-trip inspection, basic vehicle control, and on-road driving. All three parts of the assessment must be passed in order for the applicant to receive their CDL.

Additional Information

Information on the Missouri Department of Revenue

The Missouri Department of Revenue regulates the CDL license requirements in Missouri. To get more information contact them via:

Website: https://dor.mo.gov/drivers/commercial/cmv.php

Phone: 573.526.3669

 

Additional Missouri CDL Helpful Links

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