colorado
CDL Practice Test

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Welcome to the Colorado CDL practice test site. Topics covered in these practice tests are designed to prepare you for the Colorado Department of Motor Vehicles CDL test. These tests are free and you are able to take tests as many times as you would like as you prepare to obtain your Colorado CDL. 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

Which of the following is NOT an acceptable type of marking for hazardous materials?

2 / 40

Front wheel brakes are good under what kind of conditions?

3 / 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?

4 / 40

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

5 / 40

When should you drain air tanks that do not have an automatic tank drain?

6 / 40

Which of the following is NOT an important reason to look far ahead when you are driving?

7 / 40

The minimum tread depth for tires other than the front tires is ____.

8 / 40

This object should be free of shiny treads, rust, free of cracks and distortions.

9 / 40

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

10 / 40

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

11 / 40

Cargo tanks are:

12 / 40

How do you make sure the air lines are not crossed and the trailer brakes are working after supplying air to the trailer?

13 / 40

It has just reached freezing. Which of the following areas is slippery?

14 / 40

How often should you check the cargo you are transporting?

15 / 40

While completing the 2nd component of the air brake check you are required to turn the electrical power on, begin fanning off the air pressure by rapidly relasing and apply the foot brake and _____.

16 / 40

Which of the following types of cargo must never be carried on a bus with passengers?

17 / 40

What gauge on the dashboard indicates electrical system charging rate?

18 / 40

Select the true statement about emergency brakes:

19 / 40

Tires should should be replaced:

20 / 40

Select the true statement in regards to unhooking the pintle hook while the converter dolly is still under the trailer.

21 / 40

When inspecting the ______you are making sure that the lines and hoses are not chafed, cut, pinched, or dragged against tractor parts.

22 / 40

It is important to know the outage required for the liquids you carry because:

23 / 40

A truck with baffles will handle:

24 / 40

The direction of liquid movement not prevented by baffles is:

25 / 40

While completing the 1st component of the air brake check you are required to fully push down on the foot brake and _____.

26 / 40

You should check that the _____are secure, caps are on tight, and is not leaking.

27 / 40

Which of the following should you do when confronted by an aggressive driver?

28 / 40

Before backing under the trailer after connecting the air lines you should:

29 / 40

How can you check slack adjusters?

30 / 40

If hazardous material is spilling from your vehicle, do not move your vehicle:

31 / 40

How do you determine if slack adjusters need to be adjusted?

32 / 40

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

33 / 40

How do you check the coolant level?

34 / 40

What is the brake system that applies and releases the brakes when the brake pedal is used?

35 / 40

Select the false statement about suspension:

36 / 40

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

37 / 40

What color and shape is the trailer air supply control?

38 / 40

The front trailer supports should be____before driving away.

39 / 40

Where should the safety catch for the fifth wheel locking lever be located for coupling to be complete?

40 / 40

Five hazard classes that require placarding in any amount are ______.

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CDL Category Practice Tests

CDL Practice Test

How To Get A colorado Commercial Drivers License

Colorado residents the age of 18 or older can apply for their commercial driver’s license. Those between the ages of 18 and 21 are restricted to intrastate driving. Individuals must be 21 years or older to receive their Hazmat, School Bus, or Doubles/Triples Endorsements. All applicants must possess a DOT medical card issued by a FMCSA certified medical examiner in order to be eligible for their CDL.

Any applicants that fall under the following conditions are automatically disqualified from receiving a CDL.

  • Having more than one driver’s license.
  • Being disqualified for commercial driving privileges in another state.
  • Being convicted in the past two years of driving a commercial vehicle impaired.
  • Having a suspended, canceled, denied, or revoked driver’s license.

All Colorado residents who are seeking to get their commercial driver’s license must pass both one or more knowledge tests as well as a practical skills test.

Endorsements
T – Double And Triple Trailers
N – Tanker Vehicles
P – Passenger
S – School Bus
H – Hazardous Materials
X – Tanker With Hazmat

Hit the Open Road

colorado CDL License Test Tips

All applicants are required to take one or more knowledge tests to display their comprehension of the commercial driving law. Class A, B, and C applicants must complete a 50 question assessment. Class A applicants are responsible for completing an additional 20 questions all based on the subject of combination driving. Applicants seeking endorsements will be required to complete a knowledge test specific to the endorsement sought. The endorsement tests range between 20 and 30 questions. All applicants must receive a score of 80 percent or higher to pass a knowledge test.Applicants for a Colorado CDL must complete a skills test is order to receive their CDL. The skills assessment is comprised of an on-road test, vehicle inspection, and basic controls skills test. Applicants who are applying for endorsements are required to complete the skills test with the type of vehicle the endorsement is intended for.

Additional Information

Information on the Colorado Division of Motor Vehicles

The State of Colorado Department of Revenue Division of Motor Vehicles regulates the CDL requirements and testing in Colorado. To get more information contact them via:

Website:  https://www.colorado.gov/pacific/dmv/im-commercial-driver

Phone:  303.205.5600

 

Additional Colorado CDL Helpful Links

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