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

While driving at night, which lights should you use as often as you can?

2 / 40

What is the stopping distance for a tractor trailer that is traveling at 55 mph on dry pavement?

3 / 40

What is the first thing to do if your vehicle catches fire while driving?

4 / 40

Air tanks need to be drained:

5 / 40

Alcohol evaporators in some air brake systems help to:

6 / 40

A tank trailer should never be fully loaded due to:

7 / 40

Which of the following are some suspension system defects?

8 / 40

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

9 / 40

Select the factors that can cause your brakes to fade or fail:

10 / 40

What product is typically carried in a liquid tank trailer without baffles?

11 / 40

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

12 / 40

Select the two things that are important in preventing a rollover:

13 / 40

You should activate hazard lights within approximately how many feet before railroad crossing?

14 / 40

Do empty trucks have the best braking?

15 / 40

A shipper’s certification is best described as _____.

16 / 40

What is the most important reason for doing a vehicle inspection?

17 / 40

On the Hazardous Materials Table, column 1 shows:

18 / 40

This carries hydraulic fluid or air to the wheel brake assemby.

19 / 40

What is most likely to occur when driving a set of doubles and a set of trailer wheels goes into a skid?

20 / 40

Which of the following statements about downshifting is NOT true?

21 / 40

When inspecting the_____you pump the pedals 3 times and then hold it down for 5 seconds feeling for no movement to occur.

22 / 40

Mirrors with a convex surface or "spot" mirrors _____.

23 / 40

An "A/W" the first column of the hazardous materials table means:

24 / 40

When arriving at the destination announce:

25 / 40

Why should you know the outage?

26 / 40

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

27 / 40

If there is no traffic light or attendant, how far from the draw of a drawbridge must you stop?

28 / 40

How should the hand valve be used?

29 / 40

What does the drain valve for air tanks remove?

30 / 40

Select the inappropriate way to test for the low pressure warning signal.

31 / 40

Select what you should do before leaving the vehicle unattended:

32 / 40

You should_____when the low pressure warning is activated:

33 / 40

A driver that hauls hazardous materials must attend training every:

34 / 40

The most stable tanker shape is:

35 / 40

What handling effect will baffles have?

36 / 40

When should the trailer hand valve be used?

37 / 40

The emergency air line is _____and the service air line is____.

38 / 40

Tankers used to transport hazardous materials on vehicles must be marked with:

39 / 40

Select the true statement about tractor protection valve:

40 / 40

The cause of almost half of all truck driver deaths are:

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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.